[Workflow] Delete dead code

src/Symfony/Component/Workflow/Event/TransitionEvent.php

@@ -1,30 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Workflow\Event;
-
-/**
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class TransitionEvent extends Event
-{
-    private $nextState;
-
-    public function setNextState($state)
-    {
-        $this->nextState = $state;
-    }
-
-    public function getNextState()
-    {
-        return $this->nextState;
-    }
-}