Remove legacy devices from TiVo.app

I have 3 old TiVo devices I no longer own that are still listed within my TiVo.app as available devices to control/watch. Obviously, it doesn't work when I switch to any of them. I'd like to remove them completely from the list so that only the TiVo devices I currently own are listed. Is this possible?



Any suggestions would be greatly appreciated... Thanks!