patch applied (ghc): Remove ghc_ge_504 (it' s required to be true now anyway)

[Ian Lynagh]

Wed May  9 08:05:08 PDT 2007  Ian Lynagh <igloo at earth.li>
  * Remove ghc_ge_504 (it's required to be true now anyway)

    M ./configure.ac -2
    M ./mk/config.mk.in -2
    M ./utils/genapply/Makefile -4
    M ./utils/ghc-pkg/Makefile -4
    M ./utils/hsc2hs/Makefile -4