Just as you can add a post type feature, you can also remove one from an existing (registered) post type by using
remove_post_type_support(). Let’s say your project needs to remove the featured image from a particular post type that you did not register. You would use this construct to remove it. Let’s go and give it a try.
Your functions are bloated. Put them on a diet. Think "skinny" and "as few lines as possible."
Total Lab Runtime: 00:49:58