From 6b20c92be25602ff2c562067213082a29519fe46 Mon Sep 17 00:00:00 2001
From: Franz Liedke <franz@develophp.org>
Date: Wed, 4 Mar 2020 22:58:15 +0100
Subject: [PATCH] Remove mail settings backwards compatibility layer

---
 .../src/Api/Serializer/MailSettingsSerializer.php  | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/framework/core/src/Api/Serializer/MailSettingsSerializer.php b/framework/core/src/Api/Serializer/MailSettingsSerializer.php
index 4823bfa1c..20cf512fd 100644
--- a/framework/core/src/Api/Serializer/MailSettingsSerializer.php
+++ b/framework/core/src/Api/Serializer/MailSettingsSerializer.php
@@ -36,19 +36,7 @@ class MailSettingsSerializer extends AbstractSerializer
 
     private function serializeDriver(DriverInterface $driver)
     {
-        $settings = $driver->availableSettings();
-
-        if (key($settings) === 0) {
-            // BACKWARDS COMPATIBILITY: Support a simple list of fields (without
-            // type or additional metadata).
-            // Turns ["f1", "f2"] into {"f1": "", "f2": ""}
-            // @deprecated since 0.1.0-beta.12
-            $settings = array_reduce($settings, function ($memo, $key) {
-                return [$key => ''] + $memo;
-            }, []);
-        }
-
-        return $settings;
+        return $driver->availableSettings();
     }
 
     public function getId($model)