Как убрать валидатор в woocommerce?

add_filter("woocommerce_checkout_fields", "custom_my_fields");
   function custom_my_fields($fields) {
     $fields["billing"]["billing_last_name"]["required"] = false; // Фамилия не обязательна
     $fields["billing"]["billing_phone"]["required"] = true; // Телефон обязателен
return $fields;

//Вот полный перечень стандартных полей WooCommerce:

//Оплата:

$fields["billing"]["billing_first_name"]["required"]
$fields["billing"]["billing_last_name"]["required"]
$fields["billing"]["billing_company"]["required"]
$fields["billing"]["billing_address_1"]["required"]
$fields["billing"]["billing_address_2"]["required"]
$fields["billing"]["billing_city"]["required"]
$fields["billing"]["billing_postcode"]["required"]
$fields["billing"]["billing_country"]["required"]
$fields["billing"]["billing_state"]["required"]
$fields["billing"]["billing_email"]["required"]
$fields["billing"]["billing_phone"]["required"]

//Доставка

$fields["shipping"]["shipping_first_name"]["required"]
$fields["shipping"]["shipping_last_name"]["required"]
$fields["shipping"]["shipping_company"]["required"]
$fields["shipping"]["shipping_address_1"]["required"]
$fields["shipping"]["shipping_address_2"]["required"]
$fields["shipping"]["shipping_city"]["required"]
$fields["shipping"]["shipping_postcode"]["required"]
$fields["shipping"]["shipping_country"]["required"]
$fields["shipping"]["shipping_state"]["required"]

// Заказ

$fields["order"]["order_comments"]["required"]