ehhh.... you should be able to remove the camera by finding it in the outliner and simply deleting it. If for some reason that screws things up, just leave it in the scene, and create a new camera - they don't visibly render, so its not like it'll be seen. And every file already has four cameras in it by default anyways.... one more won't hurt or really change anything.
Book Wise
https://X4nd5r.deviantart.com