Exclude featured images

I am using the theme Albedo from Graph Paper Press, which uses featured images to create links to portfolio galleries on the homepage. While I want the thumbnail of the featured photo on the home page, I do not want that image to appear in the body of the gallery.

I asked graph paper press about it, and they told me:

“In content-gallery.php, you’ll see this code: //’post__not_in’ => array($thumb_id),

remove the // part.”

I tried this approach, but it did not work. As I am mainly a photographer and not a web developer or designer, I feel fairly challenged in trying to problem solve this issue. Any help would be greatly, greatly appreciated.

Here is the site I’m working on: https://www.evokenw.com

To see a really specific example of what I’m talking about, go to the featured wedding: https://www.evokenw.com/portfolio/featured-wedding

The top image is the featured image and the bottom is a posted image I would like to use as a link. I just need to find a way to get rid of that pesky top image and still use it as the thumbnail for the homepage.