Merge the GO changes dfighter2->Master part 6

REMOVED: GameObject::CanMine, GameObject::UseMine, GameObject::CalcMineRemaining, they haven't been needed or used since patch 3.0.8 when mining and herbing nodes were changed to give the entire loot at once.

MODIFIED: Some cleanup regarding the above, apparently instead of changing the system to the new one, Arcemu "developers" only changed the execution path with making chances 100% and whatnot. Very disturbing :3