How do I remove the payment option and just have the order form?

How do I remove the payment option and just have the order form?

It's not possible to keep the products and remove the payment option, I have checked your form and noticed you have removed the payment integration from your form. 

If you want to have the products displayed on the way the payment integration does, but without charging your customers, then you may use the Purchase Order app, here is a guide about it: https://www.jotform.com/help/460-How-to-Create-Payment-Form-with-Purchase-Order 

Thanks.