Remove prototype to mut_user_time_during_GC
Remove prototype to mut_user_time_during_GC

The function no longer exists.

mettekou/ghc,mfine/ghc,christiaanb/ghc,fmthoma/ghc,ezyang/ghc,mettekou/ghc,acowley/ghc,holzensp/ghc,hferreiro/replay,gcampax/ghc,ml9951/ghc,ghc-android/ghc,fmthoma/ghc,bitemyapp/ghc,anton-dessiatov/ghc,fmthoma/ghc,sdiehl/ghc,olsner/ghc,tjakway/ghcjvm,siddhanathan/ghc,bitemyapp/ghc,ilyasergey/GHC-XAppFix,tjakway/ghcjvm,nkaretnikov/ghc,mettekou/ghc,vikraman/ghc,da-x/ghc,mettekou/ghc,forked-upstream-packages-for-ghcjs/ghc,ekmett/ghc,siddhanathan/ghc,ml9951/ghc,nomeata/ghc,shlevy/ghc,AlexanderPankiv/ghc,tjakway/ghcjvm,christiaanb/ghc,vikraman/ghc,holzensp/ghc,urbanslug/ghc,jstolarek/ghc,wxwxwwxxx/ghc,GaloisInc/halvm-ghc,gcampax/ghc,sdiehl/ghc,gridaphobe/ghc,green-haskell/ghc,da-x/ghc,nomeata/ghc,gcampax/ghc,siddhanathan/ghc,TomMD/ghc,sdiehl/ghc,nomeata/ghc,gcampax/ghc,nushio3/ghc,nathyong/microghc-ghc,wxwxwwxxx/ghc,snoyberg/ghc,elieux/ghc,snoyberg/ghc,ekmett/ghc,nkaretnikov/ghc,ghc-android/ghc,nushio3/ghc,siddhanathan/ghc,forked-upstream-packages-for-ghcjs/ghc,snoyberg/ghc,oldmanmike/ghc,oldmanmike/ghc,ilyasergey/GHC-XAppFix,bitemyapp/ghc,jstolarek/ghc,TomMD/ghc,acowley/ghc,sdiehl/ghc,nushio3/ghc,spacekitteh/smcghc,tibbe/ghc,vTurbine/ghc,gridaphobe/ghc,GaloisInc/halvm-ghc,christiaanb/ghc,ml9951/ghc,elieux/ghc,ekmett/ghc,christiaanb/ghc,green-haskell/ghc,vTurbine/ghc,GaloisInc/halvm-ghc,wxwxwwxxx/ghc,fmthoma/ghc,vTurbine/ghc,tibbe/ghc,gridaphobe/ghc,AlexanderPankiv/ghc,bitemyapp/ghc,forked-upstream-packages-for-ghcjs/ghc,oldmanmike/ghc,mcmaniac/ghc,spacekitteh/smcghc,acowley/ghc,anton-dessiatov/ghc,olsner/ghc,sgillespie/ghc,GaloisInc/halvm-ghc,sdiehl/ghc,gcampax/ghc,sgillespie/ghc,tibbe/ghc,ml9951/ghc,snoyberg/ghc,frantisekfarka/ghc-dsi,nathyong/microghc-ghc,shlevy/ghc,gcampax/ghc,ryantm/ghc,wxwxwwxxx/ghc,forked-upstream-packages-for-ghcjs/ghc,hferreiro/replay,sgillespie/ghc,mfine/ghc,AlexanderPankiv/ghc,oldmanmike/ghc,sgillespie/ghc,christiaanb/ghc,mfine/ghc,urbanslug/ghc,nathyong/microghc-ghc,tjakway/ghcjvm,ghc-android/ghc,sgillespie/ghc,oldmanmike/ghc,hferreiro/replay,ml9951/ghc,vTurbine/ghc,sdiehl/ghc,nkaretnikov/ghc,ezyang/ghc,ekmett/ghc,lukexi/ghc-7.8-arm64,christiaanb/ghc,mcschroeder/ghc,elieux/ghc,wxwxwwxxx/ghc,forked-upstream-packages-for-ghcjs/ghc,bitemyapp/ghc,nushio3/ghc,urbanslug/ghc,tibbe/ghc,fmthoma/ghc,jstolarek/ghc,nkaretnikov/ghc,wxwxwwxxx/ghc,siddhanathan/ghc,ml9951/ghc,nomeata/ghc,frantisekfarka/ghc-dsi,anton-dessiatov/ghc,lukexi/ghc-7.8-arm64,ghc-android/ghc,elieux/ghc,sgillespie/ghc,spacekitteh/smcghc,holzensp/ghc,acowley/ghc,elieux/ghc,vTurbine/ghc,TomMD/ghc,ezyang/ghc,nomeata/ghc,nushio3/ghc,vikraman/ghc,da-x/ghc,acowley/ghc,ghc-android/ghc,tjakway/ghcjvm,shlevy/ghc,vikraman/ghc,wxwxwwxxx/ghc,ezyang/ghc,lukexi/ghc-7.8-arm64,tibbe/ghc,olsner/ghc,TomMD/ghc,sgillespie/ghc,GaloisInc/halvm-ghc,nathyong/microghc-ghc,snoyberg/ghc,ezyang/ghc,mcschroeder/ghc,acowley/ghc,shlevy/ghc,holzensp/ghc,lukexi/ghc,lukexi/ghc,snoyberg/ghc,hferreiro/replay,shlevy/ghc,mettekou/ghc,hferreiro/replay,nkaretnikov/ghc,AlexanderPankiv/ghc,ilyasergey/GHC-XAppFix,mcschroeder/ghc,mcmaniac/ghc,ml9951/ghc,spacekitteh/smcghc,hferreiro/replay,fmthoma/ghc,jstolarek/ghc,ghc-android/ghc,mfine/ghc,green-haskell/ghc,da-x/ghc,ryantm/ghc,forked-upstream-packages-for-ghcjs/ghc,da-x/ghc,olsner/ghc,anton-dessiatov/ghc,ilyasergey/GHC-XAppFix,mcmaniac/ghc,siddhanathan/ghc,siddhanathan/ghc,acowley/ghc,gridaphobe/ghc,TomMD/ghc,urbanslug/ghc,lukexi/ghc,da-x/ghc,oldmanmike/ghc,mettekou/ghc,da-x/ghc,mcmaniac/ghc,frantisekfarka/ghc-dsi,olsner/ghc,elieux/ghc,anton-dessiatov/ghc,elieux/ghc,ryantm/ghc,vikraman/ghc,mcmaniac/ghc,frantisekfarka/ghc-dsi,nathyong/microghc-ghc,sdiehl/ghc,green-haskell/ghc,green-haskell/ghc,AlexanderPankiv/ghc,olsner/ghc,lukexi/ghc-7.8-arm64,lukexi/ghc,vikraman/ghc,ezyang/ghc,ekmett/ghc,shlevy/ghc,urbanslug/ghc,hferreiro/replay,mcschroeder/ghc,urbanslug/ghc,fmthoma/ghc,jstolarek/ghc,christiaanb/ghc,TomMD/ghc,ml9951/ghc,ezyang/ghc,mettekou/ghc,anton-dessiatov/ghc,mcschroeder/ghc,AlexanderPankiv/ghc,nkaretnikov/ghc,forked-upstream-packages-for-ghcjs/ghc,TomMD/ghc,frantisekfarka/ghc-dsi,mfine/ghc,gridaphobe/ghc,mcschroeder/ghc,shlevy/ghc,holzensp/ghc,nushio3/ghc,nathyong/microghc-ghc,nathyong/microghc-ghc,gridaphobe/ghc,tjakway/ghcjvm,mfine/ghc,oldmanmike/ghc,mcschroeder/ghc,spacekitteh/smcghc,tjakway/ghcjvm,ryantm/ghc,GaloisInc/halvm-ghc,gridaphobe/ghc,lukexi/ghc-7.8-arm64,olsner/ghc,mfine/ghc,vTurbine/ghc,ghc-android/ghc,vTurbine/ghc,snoyberg/ghc,gcampax/ghc,urbanslug/ghc,GaloisInc/halvm-ghc,lukexi/ghc,nkaretnikov/ghc,AlexanderPankiv/ghc,nushio3/ghc,vikraman/ghc,anton-dessiatov/ghc,ryantm/ghc