Gnome3 extension to hide the clock
Hide_Clock uses a very simple actor.hide, actor.show method. It works but I'm not sure if that's the correct way of doing it or not. Works with Move Clock extensions like Frippery Move Clock.
Remove_Center_Clock uses a more complex method of removing the actor and then reinserting it. This works as well but is position dependent the way I wrote it - it only works on a centered clock.
Remove_Right_Clock uses a more complex method of removing the actor and then reinserting it. This works as well but is position dependent the way I wrote it - it would only work on a right aligned clock. I wrote it specifically for CentOS 7 Gnome Classic desktop theme which has a right aligned clock. I'm pretty sure it doesn't work at all as I haven't tested it.