MC4WP_API_v3::delete_ecommerce_store_order_line PHP Метод

    public function delete_ecommerce_store_order_line($store_id, $order_id, $line_id)
    {
        $resource = sprintf('/ecommerce/stores/%s/orders/%s/lines/%s', $store_id, $order_id, $line_id);
        return !!$this->client->delete($resource);
    }