[WordPress]functions.phpで予約投稿の無効化

functions.php

add_action('save_post', 'futuretopublish', 99);
add_action('edit_post', 'futuretopublish', 99);
  function futuretopublish(){
  global $wpdb;
  $sql = 'UPDATE `'.$wpdb->prefix.'posts` ';
  $sql .= 'SET post_status = "publish" ';
  $sql .= 'WHERE post_status = "future"';
  $wpdb->get_results($sql);
}