[feature/controller] Use query string, not path info, for controller access

This is hopefully just temporary until we can fix the relative path issue.

PHPBB3-10864

phpBB/common.php

@@ -8,8 +8,6 @@
 * Minimum Requirement: PHP 5.3.3
 */
 
-use Symfony\Component\HttpFoundation\Request;
-
 /**
 */
 if (!defined('IN_PHPBB'))
@@ -105,11 +103,6 @@ $phpbb_class_loader_ext->set_cache($phpbb_container->get('cache.driver'));
 // set up caching
 $cache = $phpbb_container->get('cache');
 
-// Instantiate the Symfony Request object
-// This must be done before phpbb_request
-// because otherwise globals are disabled
-$symfony_request = Request::createFromGlobals();
-
 // Instantiate some basic classes
 $phpbb_dispatcher = $phpbb_container->get('dispatcher');
 $request	= $phpbb_container->get('request');