Adapter/File.php
protected function deleteRaw($Key)
    {
        $CacheFile = $this->getCacheFile($Key);
        if (file_exists($CacheFile)) {
            return unlink($CacheFile);
        }

        return true;
    }
protected function deleteRaw($Key)
    {
        $CacheFile = $this->getCacheFile($Key);
        if (file_exists($CacheFile)) {
            return unlink($CacheFile);
        }

        return true;
    }
Delete Value From File
@param  string  $Key
@return boolean