Remove the "misc antags" preference

[robertGN]

Both Werewolf and Rev head are currently under misc antags, and should probably be individually toggleable. Is there any chance we could just drop the non-descriptive and ultimately useless "misc antags" preference option and instead give all antagonists a toggle?

I don't mind being a Rev Head, but I would rather not additionally enable an entirely rampage-based antagonist in order to get it.

[Flaborized]

Also during the Spacemas season Grinch is under the same setting. Haven't been a revhead in forever because of this. I fully support the roles being individually toggleable.

Other thread with people agreeing to the same thing: https://forum.ss13.co/showthread.php?tid=11232

[Flourish]

Done!