Для файла functions.php в вашей теме:
function the_title_trim($title) ( $title = attribute_escape($title); $findthese = array( '#Protected:#', '#Private:#' ); $replacewith = array( '', // What to replace "Protected:" with '' // What to replace "Private:" with ); $title = preg_replace($findthese, $replacewith, $title); return $title; ) add_filter('the_title', 'the_title_trim');