I am building a theme that includes the featured image as a navigation feature outside the single post, but once the user gets to the post in category "Specials", I'd like to take that image away. None of the other category posts require this lack of Featured Images. Theirs can be intact.
I can do it with JavaScript easily enough, targeting the div, but I'd like to do it server-side.
How can I isolate and remove a featured image from a specific category's posts?