[MERGED PR] Disables antag captains on classic

[Snoid]

ive said before in the questionable suggestion thread but ill post it here. i think captain being able to be antag but having it be really rare would be cute. so that its like, an actual twist when the leader of the ship is an antag vs just a constant thing that can happen.

also maybe have there be less other traitors when theres a traitor captain cause they are pretty overpowered