Remove #ifdef with never fulfilled condition
Remove #ifdef with never fulfilled condition

__GLASGOW_HASKELL is a typo (should be __GLASGOW_HASKELL__), obviously,
but nobody noticed.

ezyang/ghc,sdiehl/ghc,mettekou/ghc,mettekou/ghc,shlevy/ghc,mettekou/ghc,snoyberg/ghc,ezyang/ghc,ezyang/ghc,ezyang/ghc,shlevy/ghc,shlevy/ghc,olsner/ghc,sdiehl/ghc,olsner/ghc,sdiehl/ghc,shlevy/ghc,shlevy/ghc,olsner/ghc,olsner/ghc,sdiehl/ghc,mettekou/ghc,shlevy/ghc,snoyberg/ghc,mettekou/ghc,snoyberg/ghc,snoyberg/ghc,ezyang/ghc,mettekou/ghc,sdiehl/ghc,ezyang/ghc,snoyberg/ghc,mettekou/ghc,olsner/ghc,olsner/ghc,snoyberg/ghc,sdiehl/ghc,sdiehl/ghc,olsner/ghc,snoyberg/ghc,shlevy/ghc,ezyang/ghc