diff --git c/core/modules/language/language.module w/core/modules/language/language.module
index e2845e9..e11979b 100644
--- c/core/modules/language/language.module
+++ w/core/modules/language/language.module
@@ -577,17 +577,6 @@ function language_library_info() {
     ),
   );
 
-  $libraries['drupal.language.admin'] = array(
-    'title' => 'Language configuration css.',
-    'version' => VERSION,
-    'css' => array(
-      drupal_get_path('module', 'language') . '/css/language.admin.css' => array(
-        'type' => 'file',
-        'media' => 'all',
-      ),
-    ),
-  );
-
   return $libraries;
 }