Remove the Attrition Game Mode from Quick Play Playlist.

[Limeyman423]

I find this game mode really boring and uninteresting, and it has been coming up in QP nearly every game. To the point where I don't think I have had a game of Stronghold in like a week.

This game mode should be in its own playlist, lumped under Team Slayer playlist or go back to a event game mode. Its the worst!