How do I change/remove the device in presentation?

If all you are going to tell me is to select None under Change Device, please don’t bother. I’ve read that answer several times now and it hasn’t helped because that is not an option that is showing under the Prototype section or anywhere else in my design file.

My design is currently presented in a Macbook Air and I would like to remove it because I don’t like that the camera on the device is partially obstructing the header in my interface.