patch applied (ghc-6.6/testsuite): Remove " Arbitrary (Maybe a)" instances to track changes in QuickCheck

[Ian Lynagh]

Sun Nov 12 06:19:44 PST 2006  Ian Lynagh <igloo at earth.li>
  * Remove "Arbitrary (Maybe a)" instances to track changes in QuickCheck

    M ./tests/ghc-regress/lib/Data.ByteString/bytestring001.hs -5
    M ./tests/ghc-regress/lib/Data.ByteString/bytestring004.hs -5
    M ./tests/ghc-regress/lib/Data.ByteString/bytestring005.hs -5