Remove Header Image from Pages/Posts or Whole Website

Hello,

I would like to experiment with my website, about removing the Header Image altogether. Or ‘hiding’ it if that’s a better word. The homepage does not seem to have a header image, and I think this would work better consider we can add pictures to individual posts.

How can I remove/hide the Header image in either individual pages/posts or the whole website? Can this be done in the free version?

Thanks,

Cabel18