diff --git c/core/modules/language/language.routing.yml w/core/modules/language/language.routing.yml
index cbb5d16..04487ce 100644
--- c/core/modules/language/language.routing.yml
+++ w/core/modules/language/language.routing.yml
@@ -74,7 +74,6 @@ language.content_settings_page:
   path: '/admin/config/regional/content-language'
   defaults:
     _title: 'Content language settings'
-    _content: '\Drupal\language\Controller\LanguageController::contentSettings'
     _form: 'Drupal\language\Form\ContentLanguageSettingsForm'
   requirements:
     _permission: 'administer languages'
diff --git c/core/modules/language/lib/Drupal/language/Controller/LanguageController.php w/core/modules/language/lib/Drupal/language/Controller/LanguageController.php
deleted file mode 100644
index 0724471..0000000
--- c/core/modules/language/lib/Drupal/language/Controller/LanguageController.php
+++ /dev/null
@@ -1,23 +0,0 @@
-<?php
-
-/**
- * @file
- * Contains \Drupal\language\Controller\LanguageController.
- */
-
-namespace Drupal\language\Controller;
-
-/**
- * Returns responses for language routes.
- */
-class LanguageController {
-
-  /**
-   * @todo Remove language_content_settings_page().
-   */
-  public function contentSettings() {
-    module_load_include('admin.inc', 'language');
-    return language_content_settings_page();
-  }
-
-}