Elgg\Assets\ExternalFiles::unregister PHP Method

    public function unregister($type, $name)
    {
        $this->bootstrap($type);
        $name = trim(strtolower($name));
        $item = elgg_extract($name, $GLOBALS['_ELGG']->externals_map[$type]);
        if ($item) {
            unset($GLOBALS['_ELGG']->externals_map[$type][$name]);
            return $GLOBALS['_ELGG']->externals[$type]->remove($item);
        }
        return false;
    }