Telemenu: Remove ducking feature for Natural Selection because of incompatibilities

The main reason to remove this feature and let it behave like normal in Natural Selection is the fact that, in this game, there is different classes. Humans can crouch when some (small) aliens can't and normally never get the FL_DUCKING flag.
There is a small chance to create a teleportion point ducking as human and teleport an alien who will get an unsual flag for an alien.

So to don't mess with the game, this feature is disabled.