remove_rewrite_tag

WordPress Version: 4.5

/**
 * Removes an existing rewrite tag (like %postname%).
 *
 * @since 4.5.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param string $tag Name of the rewrite tag.
 */
function remove_rewrite_tag($tag)
{
    global $wp_rewrite;
    $wp_rewrite->remove_rewrite_tag($tag);
}