Sela Theme — Remove featured image from child page

I am working on a grid template that has 5 child pages. I want to assign a featured image to each child page, so that those images will be visible in the grid on the parent page, however, when I make a featured image for each child page, it shows up at the top of the child page.

How do I remove the featured image from the child page but still have the image on the parent page as a link?