Minor Fixes

Cleaned up obsolete code in PocketProvider and fixed the assignment of
hasNoSky so that it actually applies. Also overloaded getActualHeight()
so that we return 256 despite hasNoSky = true - the default MC behavior
is that we would return 128 in that case. Also undid a previous change
to EventHookContainer - players that die in pockets will respawn in
Limbo, again.