Merge pull request #12272 from owncloud/drop-var_dump

drop unneeded var_dump - fixes #9997

lib/private/route/router.php

@@ -243,7 +243,6 @@ class Router implements IRouter {
 		if (isset($parameters['action'])) {
 			$action = $parameters['action'];
 			if (!is_callable($action)) {
-				var_dump($action);
 				throw new \Exception('not a callable action');
 			}
 			unset($parameters['action']);