Revert "My first commit of codes"

This reverts commit a6e5a69348.

vendor/symfony/http-kernel/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php

@@ -1,55 +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\HttpKernel\CacheClearer;
-
-/**
- * ChainCacheClearer.
- *
- * @author Dustin Dobervich <ddobervich@gmail.com>
- */
-class ChainCacheClearer implements CacheClearerInterface
-{
-    /**
-     * @var array
-     */
-    protected $clearers;
-
-    /**
-     * Constructs a new instance of ChainCacheClearer.
-     *
-     * @param array $clearers The initial clearers.
-     */
-    public function __construct(array $clearers = array())
-    {
-        $this->clearers = $clearers;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function clear($cacheDir)
-    {
-        foreach ($this->clearers as $clearer) {
-            $clearer->clear($cacheDir);
-        }
-    }
-
-    /**
-     * Adds a cache clearer to the aggregate.
-     *
-     * @param CacheClearerInterface $clearer
-     */
-    public function add(CacheClearerInterface $clearer)
-    {
-        $this->clearers[] = $clearer;
-    }
-}