Reverted change to u'Actors.ACBS'

* The set or list can't contain all possibilities from each game mode.

Traceback (most recent call last):
File "bash\basher.py", line 7048, in Execute
File "bash\bosh.py", line 10459, in initData
File "bash\bosh.py", line 12663, in initData
File "bash\bosh.py", line 12663, in <genexpr>
File "bash\bolt.py", line 1638, in __getattr__
AttributeError: pcLevelMult

Skyrim will need separate definitions for other flags.