remove dzenUrgencyHook* from Dzen module
remove dzenUrgencyHook* from Dzen module

To be replaced by UrgencyHook instances defined in the UrgencyHook module.

darcs-hash:20071110231115-78224-7a927fcd9a00f9bef4230ea59b99af7334df0d52

kmels/xmonad-launcher,kmels/xmonad-launcher