[Xmonad] darcs patch: get rid of duplicate mapWorkspaces function (and 1 more)

This is predicated on the mapWorkspace patch being applied to core (duh). Sat Oct 6 01:54:04 EDT 2007 Devin Mullins * get rid of duplicate mapWorkspaces function Sat Oct 6 01:56:52 EDT 2007 Devin Mullins * get rid of obviated comment