New pages from template include image that can't be removed

I started off using a template but I don’t rely on the background image so I’d like to remove it (so it doesn’t appear in the exported assets). When I add a new page, “fans-black.jpg” is set as the image for some empty class. If I try to delete the image, it just changes the class name to “Body 1”. So this causes the asset to be exported every time. Any suggestions?