Drop unused import

Author: Sobak

public/index.php

@@ -7,7 +7,6 @@
 use Moust\Silex\Provider\CacheServiceProvider;
 use Silex\Provider\TwigServiceProvider;
 use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\BinaryFileResponse;
 use Symfony\Component\HttpKernel\Exception\HttpException;