[HttpKernel] removed a stupid line of code

src/Symfony/Component/HttpKernel/Profiler/Profiler.php

@@ -231,7 +231,6 @@ class Profiler
             return;
         }
 
-        $response = $response;
         $response->headers->set('X-Debug-Token', $this->getToken());
 
         foreach ($this->collectors as $collector) {