Remove residual code.

Author: Calin

src/App/src/RoutesDelegator.php

@@ -4,12 +4,9 @@
 
 use Fig\Http\Message\RequestMethodInterface;
 use Frontend\App\Controller\LanguageController;
-use Laminas\Diactoros\Response\JsonResponse;
 use Mezzio\Application;
 use Psr\Container\ContainerInterface;
 
-use function var_dump;
-
 /**
  * Class RoutesDelegator
  * @package Frontend\App