Remove latch from sv_cheats

[Rachael]

To be honest - other than competitive "fair play" in Multiplayer (good luck with that on an app with no built-in anti-cheat) there is really no reason to have this latched, other than "other games did it".

Valve source games (HL2 and later) don't even have this latched anymore.

I think the net arbitrator should be able to turn this on and off at will.

[Graf Zahl]

Works for me.

[Rachael]

done