remove DeliveryDurationInMinutes

woo2iiko-functions

add_action('woocommerce_before_thankyou', function ($wc_order_id){
            $wc_order = wc_get_order($wc_order_id);
            if (empty($wc_order) || $wc_order->has_status('failed')) {
                return;
            }
            $wc_order->update_meta_data('deliveryDurationInMinutes', '');
            $wc_order->save_meta_data();
        }, 5);