Revert "My first commit of codes"

This reverts commit a6e5a69348.

vendor/symfony/http-kernel/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmer.php

@@ -1,32 +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\CacheWarmer;
-
-/**
- * Abstract cache warmer that knows how to write a file to the cache.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-abstract class CacheWarmer implements CacheWarmerInterface
-{
-    protected function writeCacheFile($file, $content)
-    {
-        $tmpFile = tempnam(dirname($file), basename($file));
-        if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
-            @chmod($file, 0666 & ~umask());
-
-            return;
-        }
-
-        throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $file));
-    }
-}