How to disable cart/payment feature?


I am trying to disable cart and payment feature so that reaction becomes like classifieds template. I am aware that I can do it by manually changing source code. Just commenting that section of the code that shows cart and payment buttons would be enough for now. These features may be needed later on. I’ve tried commenting inside the render() function in JS file or commenting out all html in html file for a template but no success yet. Could you please help?