Kill occSetElts
Kill occSetElts

It uses uniqSetToList which is nondeterministic.

GHC Trac: #4012

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