Classes/Controller/Ajax/PageSeo/AdvancedController.php
protected function clearMetaTags($pid, $sysLanguage)
    {
        $query = 'DELETE FROM tx_metaseo_metatag
                        WHERE pid = ' . (int)$pid . '
                          AND sys_language_uid = ' . (int)$sysLanguage;
        DatabaseUtility::exec($query);
    }
protected function clearMetaTags($pid, $sysLanguage)
    {
        $query = 'DELETE FROM tx_metaseo_metatag
                        WHERE pid = ' . (int)$pid . '
                          AND sys_language_uid = ' . (int)$sysLanguage;
        DatabaseUtility::exec($query);
    }
protected function clearMetaTags ( $ pid , $ sysLanguage ) { $ query = 'DELETE FROM tx_metaseo_metatag
                        WHERE pid = ' . ( int ) $ pid . '
                          AND sys_language_uid = ' . ( int ) $ sysLanguage ; DatabaseUtility :: exec ( $ query ) ; }
Clear all meta tags for one page

@param integer      $pid         PID
@param integer|null $sysLanguage system language id
Clear all meta tags for one page