satisfying styleci, undo mysql in travis

framework/core/.travis.yml

@@ -6,9 +6,6 @@ php:
   - 7.2
   - hhvm
 
-services:
-  - mysql
-
 matrix:
   allow_failures:
     - php: hhvm

framework/core/tests/Flarum/Api/Handler/IlluminateValidationExceptionHandlerTest.php

@@ -13,9 +13,8 @@ namespace Tests\Flarum\Api\Handler;
 
 use Exception;
 use Flarum\Api\ExceptionHandler\IlluminateValidationExceptionHandler;
-use Illuminate\Translation\{
-    Translator, ArrayLoader
-};
+use Illuminate\Translation\ArrayLoader;
+use Illuminate\Translation\Translator;
 use Illuminate\Validation\ValidationException;
 use Illuminate\Validation\Factory;
 use Tests\Test\TestCase;