I use featured images so that when I make a new post it has a thumbnail pic next to it, but when my users click into the post I don't want them to see the image. Is it possible to use the featured image but not have it appear in the actual post?

A possible solution could be to enable the "Small featured image" checkbox (in order to preserve date/cat/author info) and add a Custom CSS in the Advanced tab like so:

.entry-img-src { display: none; }