[C2hs] patch applied (c2hs): Remove unused fixpoint monad combinator

[Duncan Coutts]

Sun May 13 16:32:53 PDT 2007  Duncan Coutts <duncan.coutts at worc.ox.ac.uk>
  * Remove unused fixpoint monad combinator
  If we ever need to add this back in, we should use the standard MonadFix class

    M ./base/state/State.hs -2 +2
    M ./base/state/StateBase.hs -7 +2
    M ./base/state/StateTrans.hs -21 +1