patch applied (packages/mtl): Trim imports

[Sven Panne]

Wed Feb  7 06:45:45 PST 2007  sven.panne at aedion.de
  * Trim imports

    M ./Control/Monad/Cont.hs -5
    M ./Control/Monad/Error.hs -5
    M ./Control/Monad/Identity.hs -2
    M ./Control/Monad/List.hs -2
    M ./Control/Monad/RWS.hs -2
    M ./Control/Monad/Reader.hs -2
    M ./Control/Monad/State.hs -2
    M ./Control/Monad/Trans.hs -2
    M ./Control/Monad/Writer.hs -2