merged branch alexandresalome/fix-useless-use-statement-wdt (PR #2851)

Commits
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73b744b [WebProfilerBundle] Remove a useless statement

Discussion
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[2.0] [WebProfilerBundle] Fix useless use statement in WebDebugToolbarListener

```
Bug fix: no
Feature addition: no
Backwards compatibility break: no
Symfony2 tests pass: yes
```

src/Symfony/Bundle/WebProfilerBundle/EventListener/WebDebugToolbarListener.php

@@ -15,7 +15,6 @@ use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
 use Symfony\Bundle\TwigBundle\TwigEngine;
-use Symfony\Bundle\WebProfilerBundle\EventListener\WebDebugToolbarListener;
 
 /**
  * WebDebugToolbarListener injects the Web Debug Toolbar.