Removed unused method encodeFilename() on DriverBaseTrait

Author: Geolim4

src/phpFastCache/Cache/DriverBaseTrait.php

@@ -39,15 +39,6 @@ trait DriverBaseTrait
      */
     protected $instance;
 
-    /**
-     * @param $keyword
-     * @return string
-     */
-    protected function encodeFilename($keyword)
-    {
-        return md5($keyword);
-    }
-
     /**
      * @param $config_name
      * @param string $value