Fix build by removing unused import
Fix build by removing unused import

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