Remove Extremes from Mentor Roulette

[TheMightyMollusk]

Also adding a little warning to extreme fights the first time you queue for it that's like "this is hard content, beware !" would be good. Considering Bozja has that, it's not a hard thing to add, and would likely make players consider leveling up their playing skills or asking for help before stepping into the duty.

I mean, having Extreme in the title should be a pretty good indicator.