advertising::UnInstallFiles: Bitrix method

      
<?php 
//  advertising :: UnInstallFiles()
//  /dist/bitrix/modules/advertising/install/index.php:185

    function UnInstallFiles()
    {
        global $DB;

        if (!array_key_exists("savedata", $_REQUEST) || $_REQUEST["savedata"] !== "Y")
        {
            $db_res = $DB->Query("SELECT ID FROM b_file WHERE MODULE_ID = 'advertising'");
            while ($arRes = $db_res->Fetch())
            {
                CFile::Delete($arRes["ID"]);
            }
        }

        DeleteDirFiles($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/advertising/install/admin", $_SERVER["DOCUMENT_ROOT"]."/bitrix/admin");
        DeleteDirFiles($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/advertising/install/themes/.default/", $_SERVER["DOCUMENT_ROOT"]."/bitrix/themes/.default");//css
        DeleteDirFilesEx("/bitrix/themes/.default/icons/advertising/");//icons
        DeleteDirFilesEx("/bitrix/images/advertising/");//images
        DeleteDirFilesEx("/bitrix/js/advertising/");
        DeleteDirFiles($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/advertising/install/public", $_SERVER["DOCUMENT_ROOT"]."/bitrix");

        return true;
    }