Убрать подсказки по форматам в Drupal 7

function yourtheme_form_comment_form_alter(&$form, &$form_state, &$form_id)
{
  $form['comment_body']['#after_build'][] = 'configure_comment_form';
}

function configure_comment_form(&$form) {
  $form['und'][0]['format']['guidelines']['#access'] = FALSE;
  return $form;
}