Remove unused unifyType_
Remove unused unifyType_

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