diff --git a/framework/core/migrations/2018_01_11_094000_change_access_tokens_add_foreign_keys.php b/framework/core/migrations/2018_01_11_094000_change_access_tokens_add_foreign_keys.php
index 7ed9921ce..3103a963e 100644
--- a/framework/core/migrations/2018_01_11_094000_change_access_tokens_add_foreign_keys.php
+++ b/framework/core/migrations/2018_01_11_094000_change_access_tokens_add_foreign_keys.php
@@ -23,13 +23,13 @@ return [
             })
             ->delete();
 
-        $schema->table('access_tokens', function (Blueprint $table) use ($schema) {
+        $schema->table('access_tokens', function (Blueprint $table) {
             $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
         });
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('access_tokens', function (Blueprint $table) use ($schema) {
+        $schema->table('access_tokens', function (Blueprint $table) {
             $table->dropForeign(['user_id']);
         });
     }
diff --git a/framework/core/migrations/2018_01_11_155300_change_discussions_add_foreign_keys.php b/framework/core/migrations/2018_01_11_155300_change_discussions_add_foreign_keys.php
index 4c8b68a3d..24aa03efd 100644
--- a/framework/core/migrations/2018_01_11_155300_change_discussions_add_foreign_keys.php
+++ b/framework/core/migrations/2018_01_11_155300_change_discussions_add_foreign_keys.php
@@ -33,7 +33,7 @@ return [
             'last_post_id' => $selectId('posts', 'last_post_id'),
         ]);
 
-        $schema->table('discussions', function (Blueprint $table) use ($schema) {
+        $schema->table('discussions', function (Blueprint $table) {
             $table->foreign('user_id')->references('id')->on('users')->onDelete('set null');
             $table->foreign('last_posted_user_id')->references('id')->on('users')->onDelete('set null');
             $table->foreign('hidden_user_id')->references('id')->on('users')->onDelete('set null');
@@ -43,7 +43,7 @@ return [
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('discussions', function (Blueprint $table) use ($schema) {
+        $schema->table('discussions', function (Blueprint $table) {
             $table->dropForeign(['user_id']);
             $table->dropForeign(['last_posted_user_id']);
             $table->dropForeign(['hidden_user_id']);
diff --git a/framework/core/migrations/2018_01_15_071900_change_discussion_user_add_foreign_keys.php b/framework/core/migrations/2018_01_15_071900_change_discussion_user_add_foreign_keys.php
index fdbfc22c4..e7d8aa99d 100644
--- a/framework/core/migrations/2018_01_15_071900_change_discussion_user_add_foreign_keys.php
+++ b/framework/core/migrations/2018_01_15_071900_change_discussion_user_add_foreign_keys.php
@@ -26,14 +26,14 @@ return [
             })
             ->delete();
 
-        $schema->table('discussion_user', function (Blueprint $table) use ($schema) {
+        $schema->table('discussion_user', function (Blueprint $table) {
             $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
             $table->foreign('discussion_id')->references('id')->on('discussions')->onDelete('cascade');
         });
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('discussion_user', function (Blueprint $table) use ($schema) {
+        $schema->table('discussion_user', function (Blueprint $table) {
             $table->dropForeign(['user_id']);
             $table->dropForeign(['discussion_id']);
         });
diff --git a/framework/core/migrations/2018_01_15_072700_change_email_tokens_add_foreign_keys.php b/framework/core/migrations/2018_01_15_072700_change_email_tokens_add_foreign_keys.php
index 7d3053d04..243b706f3 100644
--- a/framework/core/migrations/2018_01_15_072700_change_email_tokens_add_foreign_keys.php
+++ b/framework/core/migrations/2018_01_15_072700_change_email_tokens_add_foreign_keys.php
@@ -23,13 +23,13 @@ return [
             })
             ->delete();
 
-        $schema->table('email_tokens', function (Blueprint $table) use ($schema) {
+        $schema->table('email_tokens', function (Blueprint $table) {
             $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
         });
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('email_tokens', function (Blueprint $table) use ($schema) {
+        $schema->table('email_tokens', function (Blueprint $table) {
             $table->dropForeign(['user_id']);
         });
     }
diff --git a/framework/core/migrations/2018_01_18_130500_change_group_permission_add_foreign_keys.php b/framework/core/migrations/2018_01_18_130500_change_group_permission_add_foreign_keys.php
index b24fc8acb..267a09dc0 100644
--- a/framework/core/migrations/2018_01_18_130500_change_group_permission_add_foreign_keys.php
+++ b/framework/core/migrations/2018_01_18_130500_change_group_permission_add_foreign_keys.php
@@ -23,13 +23,13 @@ return [
             })
             ->delete();
 
-        $schema->table('group_permission', function (Blueprint $table) use ($schema) {
+        $schema->table('group_permission', function (Blueprint $table) {
             $table->foreign('group_id')->references('id')->on('groups')->onDelete('cascade');
         });
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('group_permission', function (Blueprint $table) use ($schema) {
+        $schema->table('group_permission', function (Blueprint $table) {
             $table->dropForeign(['group_id']);
         });
     }
diff --git a/framework/core/migrations/2018_01_18_130700_change_group_user_add_foreign_keys.php b/framework/core/migrations/2018_01_18_130700_change_group_user_add_foreign_keys.php
index 5a9bbdb34..9358bec93 100644
--- a/framework/core/migrations/2018_01_18_130700_change_group_user_add_foreign_keys.php
+++ b/framework/core/migrations/2018_01_18_130700_change_group_user_add_foreign_keys.php
@@ -26,14 +26,14 @@ return [
             })
             ->delete();
 
-        $schema->table('group_user', function (Blueprint $table) use ($schema) {
+        $schema->table('group_user', function (Blueprint $table) {
             $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
             $table->foreign('group_id')->references('id')->on('groups')->onDelete('cascade');
         });
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('group_user', function (Blueprint $table) use ($schema) {
+        $schema->table('group_user', function (Blueprint $table) {
             $table->dropForeign(['user_id']);
             $table->dropForeign(['group_id']);
         });
diff --git a/framework/core/migrations/2018_01_18_133100_change_notifications_add_foreign_keys.php b/framework/core/migrations/2018_01_18_133100_change_notifications_add_foreign_keys.php
index 3f1f18f98..f3b1af325 100644
--- a/framework/core/migrations/2018_01_18_133100_change_notifications_add_foreign_keys.php
+++ b/framework/core/migrations/2018_01_18_133100_change_notifications_add_foreign_keys.php
@@ -30,14 +30,14 @@ return [
             })
             ->update(['from_user_id' => null]);
 
-        $schema->table('notifications', function (Blueprint $table) use ($schema) {
+        $schema->table('notifications', function (Blueprint $table) {
             $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
             $table->foreign('from_user_id')->references('id')->on('users')->onDelete('set null');
         });
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('notifications', function (Blueprint $table) use ($schema) {
+        $schema->table('notifications', function (Blueprint $table) {
             $table->dropForeign(['user_id']);
             $table->dropForeign(['from_user_id']);
         });
diff --git a/framework/core/migrations/2018_01_18_134500_change_password_tokens_add_foreign_keys.php b/framework/core/migrations/2018_01_18_134500_change_password_tokens_add_foreign_keys.php
index 6004e4049..cb7303e71 100644
--- a/framework/core/migrations/2018_01_18_134500_change_password_tokens_add_foreign_keys.php
+++ b/framework/core/migrations/2018_01_18_134500_change_password_tokens_add_foreign_keys.php
@@ -23,13 +23,13 @@ return [
             })
             ->delete();
 
-        $schema->table('password_tokens', function (Blueprint $table) use ($schema) {
+        $schema->table('password_tokens', function (Blueprint $table) {
             $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
         });
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('password_tokens', function (Blueprint $table) use ($schema) {
+        $schema->table('password_tokens', function (Blueprint $table) {
             $table->dropForeign(['user_id']);
         });
     }
diff --git a/framework/core/migrations/2018_01_18_135100_change_posts_add_foreign_keys.php b/framework/core/migrations/2018_01_18_135100_change_posts_add_foreign_keys.php
index 1cc9d84e2..00ef23223 100644
--- a/framework/core/migrations/2018_01_18_135100_change_posts_add_foreign_keys.php
+++ b/framework/core/migrations/2018_01_18_135100_change_posts_add_foreign_keys.php
@@ -31,7 +31,7 @@ return [
             'hidden_user_id' => $selectId('users', 'hidden_user_id'),
         ]);
 
-        $schema->table('posts', function (Blueprint $table) use ($schema) {
+        $schema->table('posts', function (Blueprint $table) {
             $table->foreign('user_id')->references('id')->on('users')->onDelete('set null');
             $table->foreign('edited_user_id')->references('id')->on('users')->onDelete('set null');
             $table->foreign('hidden_user_id')->references('id')->on('users')->onDelete('set null');
@@ -39,7 +39,7 @@ return [
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('posts', function (Blueprint $table) use ($schema) {
+        $schema->table('posts', function (Blueprint $table) {
             $table->dropForeign(['user_id']);
             $table->dropForeign(['discussion_id']);
             $table->dropForeign(['edited_user_id']);
diff --git a/framework/core/migrations/2018_09_15_041340_add_users_indicies.php b/framework/core/migrations/2018_09_15_041340_add_users_indicies.php
index c1ad4c373..30aebd912 100644
--- a/framework/core/migrations/2018_09_15_041340_add_users_indicies.php
+++ b/framework/core/migrations/2018_09_15_041340_add_users_indicies.php
@@ -14,7 +14,7 @@ use Illuminate\Database\Schema\Builder;
 
 return [
     'up' => function (Builder $schema) {
-        $schema->table('users', function (Blueprint $table) use ($schema) {
+        $schema->table('users', function (Blueprint $table) {
             $table->index('joined_at');
             $table->index('last_seen_at');
             $table->index('discussion_count');
@@ -23,7 +23,7 @@ return [
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('users', function (Blueprint $table) use ($schema) {
+        $schema->table('users', function (Blueprint $table) {
             $table->dropIndex(['joined_at']);
             $table->dropIndex(['last_seen_at']);
             $table->dropIndex(['discussion_count']);
diff --git a/framework/core/migrations/2018_09_15_041828_add_discussions_indicies.php b/framework/core/migrations/2018_09_15_041828_add_discussions_indicies.php
index 04e47415c..15433f0fb 100644
--- a/framework/core/migrations/2018_09_15_041828_add_discussions_indicies.php
+++ b/framework/core/migrations/2018_09_15_041828_add_discussions_indicies.php
@@ -14,7 +14,7 @@ use Illuminate\Database\Schema\Builder;
 
 return [
     'up' => function (Builder $schema) {
-        $schema->table('discussions', function (Blueprint $table) use ($schema) {
+        $schema->table('discussions', function (Blueprint $table) {
             $table->index('last_posted_at');
             $table->index('last_posted_user_id');
             $table->index('created_at');
@@ -26,7 +26,7 @@ return [
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('discussions', function (Blueprint $table) use ($schema) {
+        $schema->table('discussions', function (Blueprint $table) {
             $table->dropIndex(['last_posted_at']);
             $table->dropIndex(['last_posted_user_id']);
             $table->dropIndex(['created_at']);
diff --git a/framework/core/migrations/2018_09_15_043337_add_notifications_indices.php b/framework/core/migrations/2018_09_15_043337_add_notifications_indices.php
index 8aee5d098..724c79eb6 100644
--- a/framework/core/migrations/2018_09_15_043337_add_notifications_indices.php
+++ b/framework/core/migrations/2018_09_15_043337_add_notifications_indices.php
@@ -14,13 +14,13 @@ use Illuminate\Database\Schema\Builder;
 
 return [
     'up' => function (Builder $schema) {
-        $schema->table('notifications', function (Blueprint $table) use ($schema) {
+        $schema->table('notifications', function (Blueprint $table) {
             $table->index('user_id');
         });
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('notifications', function (Blueprint $table) use ($schema) {
+        $schema->table('notifications', function (Blueprint $table) {
             $table->dropIndex(['user_id']);
         });
     }
diff --git a/framework/core/migrations/2018_09_15_043621_add_posts_indices.php b/framework/core/migrations/2018_09_15_043621_add_posts_indices.php
index 6e67c197d..484a3b842 100644
--- a/framework/core/migrations/2018_09_15_043621_add_posts_indices.php
+++ b/framework/core/migrations/2018_09_15_043621_add_posts_indices.php
@@ -14,7 +14,7 @@ use Illuminate\Database\Schema\Builder;
 
 return [
     'up' => function (Builder $schema) {
-        $schema->table('posts', function (Blueprint $table) use ($schema) {
+        $schema->table('posts', function (Blueprint $table) {
             $table->index(['discussion_id', 'number']);
             $table->index(['discussion_id', 'created_at']);
             $table->index(['user_id', 'created_at']);
@@ -22,7 +22,7 @@ return [
     },
 
     'down' => function (Builder $schema) {
-        $schema->table('posts', function (Blueprint $table) use ($schema) {
+        $schema->table('posts', function (Blueprint $table) {
             $table->dropIndex(['discussion_id', 'number']);
             $table->dropIndex(['discussion_id', 'created_at']);
             $table->dropIndex(['user_id', 'created_at']);