Issue #15957: dropped deprecated User::getAuthManager() method (#15981)

framework/web/User.php

@@ -757,20 +757,6 @@ class User extends Component
     }
 
     /**
-     * Returns auth manager associated with the user component.
-     *
-     * By default this is the `authManager` application component.
-     * You may override this method to return a different auth manager instance if needed.
-     * @return \yii\rbac\ManagerInterface
-     * @since 2.0.6
-     * @deprecated since version 2.0.9, to be removed in 2.1. Use [[getAccessChecker()]] instead.
-     */
-    protected function getAuthManager()
-    {
-        return Yii::$app->getAuthManager();
-    }
-
-    /**
      * Returns the access checker used for checking access.
      *
      * By default this is the `authManager` application component.