configure.ac: drop unused HAVE_BIN_SH
configure.ac: drop unused HAVE_BIN_SH

Summary:
This hugs heritage gone away with commit f1dffa0224c9e8dcf1d3908e888e7d683485791b
in 2001

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

Test Plan: tried to find HAVE_BIN_SH in internet, no success

Reviewers: simonmar, austin

Reviewed By: austin

Subscribers: phaskell, simonmar, relrod, ezyang, carter

Differential Revision: https://phabricator.haskell.org/D117

wxwxwwxxx/ghc,nkaretnikov/ghc,mfine/ghc,gcampax/ghc,jstolarek/ghc,GaloisInc/halvm-ghc,gcampax/ghc,ghc-android/ghc,vikraman/ghc,nushio3/ghc,anton-dessiatov/ghc,mfine/ghc,AlexanderPankiv/ghc,tjakway/ghcjvm,siddhanathan/ghc,ezyang/ghc,sgillespie/ghc,vTurbine/ghc,gridaphobe/ghc,AlexanderPankiv/ghc,forked-upstream-packages-for-ghcjs/ghc,ml9951/ghc,oldmanmike/ghc,siddhanathan/ghc,forked-upstream-packages-for-ghcjs/ghc,sgillespie/ghc,mfine/ghc,olsner/ghc,nkaretnikov/ghc,nkaretnikov/ghc,spacekitteh/smcghc,ezyang/ghc,vikraman/ghc,christiaanb/ghc,ghc-android/ghc,christiaanb/ghc,jstolarek/ghc,TomMD/ghc,oldmanmike/ghc,gridaphobe/ghc,gcampax/ghc,oldmanmike/ghc,GaloisInc/halvm-ghc,ml9951/ghc,GaloisInc/halvm-ghc,TomMD/ghc,shlevy/ghc,shlevy/ghc,da-x/ghc,mettekou/ghc,tjakway/ghcjvm,snoyberg/ghc,sdiehl/ghc,vTurbine/ghc,olsner/ghc,ghc-android/ghc,snoyberg/ghc,da-x/ghc,bitemyapp/ghc,ezyang/ghc,ml9951/ghc,ezyang/ghc,christiaanb/ghc,nathyong/microghc-ghc,anton-dessiatov/ghc,elieux/ghc,mettekou/ghc,nushio3/ghc,christiaanb/ghc,wxwxwwxxx/ghc,anton-dessiatov/ghc,ghc-android/ghc,ghc-android/ghc,nathyong/microghc-ghc,ezyang/ghc,snoyberg/ghc,gcampax/ghc,vikraman/ghc,vTurbine/ghc,vTurbine/ghc,oldmanmike/ghc,spacekitteh/smcghc,holzensp/ghc,tjakway/ghcjvm,GaloisInc/halvm-ghc,mfine/ghc,ghc-android/ghc,anton-dessiatov/ghc,nkaretnikov/ghc,nkaretnikov/ghc,forked-upstream-packages-for-ghcjs/ghc,nkaretnikov/ghc,TomMD/ghc,vikraman/ghc,siddhanathan/ghc,siddhanathan/ghc,olsner/ghc,mettekou/ghc,gridaphobe/ghc,forked-upstream-packages-for-ghcjs/ghc,snoyberg/ghc,vikraman/ghc,sdiehl/ghc,snoyberg/ghc,siddhanathan/ghc,acowley/ghc,green-haskell/ghc,TomMD/ghc,da-x/ghc,oldmanmike/ghc,olsner/ghc,wxwxwwxxx/ghc,anton-dessiatov/ghc,mcschroeder/ghc,snoyberg/ghc,acowley/ghc,urbanslug/ghc,green-haskell/ghc,urbanslug/ghc,elieux/ghc,anton-dessiatov/ghc,acowley/ghc,elieux/ghc,mcschroeder/ghc,ml9951/ghc,nathyong/microghc-ghc,wxwxwwxxx/ghc,mfine/ghc,siddhanathan/ghc,gcampax/ghc,TomMD/ghc,shlevy/ghc,mettekou/ghc,wxwxwwxxx/ghc,siddhanathan/ghc,holzensp/ghc,bitemyapp/ghc,urbanslug/ghc,fmthoma/ghc,nushio3/ghc,sgillespie/ghc,AlexanderPankiv/ghc,shlevy/ghc,jstolarek/ghc,fmthoma/ghc,mettekou/ghc,tjakway/ghcjvm,GaloisInc/halvm-ghc,green-haskell/ghc,vTurbine/ghc,christiaanb/ghc,AlexanderPankiv/ghc,christiaanb/ghc,tjakway/ghcjvm,vikraman/ghc,forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,jstolarek/ghc,acowley/ghc,fmthoma/ghc,holzensp/ghc,olsner/ghc,mcschroeder/ghc,gridaphobe/ghc,shlevy/ghc,GaloisInc/halvm-ghc,nathyong/microghc-ghc,nathyong/microghc-ghc,urbanslug/ghc,vTurbine/ghc,nushio3/ghc,nushio3/ghc,forked-upstream-packages-for-ghcjs/ghc,wxwxwwxxx/ghc,oldmanmike/ghc,AlexanderPankiv/ghc,olsner/ghc,da-x/ghc,GaloisInc/halvm-ghc,olsner/ghc,AlexanderPankiv/ghc,spacekitteh/smcghc,holzensp/ghc,sdiehl/ghc,shlevy/ghc,da-x/ghc,green-haskell/ghc,TomMD/ghc,AlexanderPankiv/ghc,vTurbine/ghc,ml9951/ghc,gcampax/ghc,nkaretnikov/ghc,ghc-android/ghc,ml9951/ghc,sgillespie/ghc,urbanslug/ghc,bitemyapp/ghc,tjakway/ghcjvm,acowley/ghc,sdiehl/ghc,jstolarek/ghc,mcschroeder/ghc,elieux/ghc,acowley/ghc,elieux/ghc,sgillespie/ghc,fmthoma/ghc,bitemyapp/ghc,tjakway/ghcjvm,sgillespie/ghc,nathyong/microghc-ghc,spacekitteh/smcghc,mettekou/ghc,holzensp/ghc,da-x/ghc,oldmanmike/ghc,elieux/ghc,elieux/ghc,anton-dessiatov/ghc,wxwxwwxxx/ghc,mfine/ghc,gcampax/ghc,nushio3/ghc,forked-upstream-packages-for-ghcjs/ghc,mfine/ghc,da-x/ghc,sdiehl/ghc,christiaanb/ghc,TomMD/ghc,mettekou/ghc,sgillespie/ghc,shlevy/ghc,sdiehl/ghc,mcschroeder/ghc,sdiehl/ghc,fmthoma/ghc,spacekitteh/smcghc,ml9951/ghc,urbanslug/ghc,urbanslug/ghc,fmthoma/ghc,ezyang/ghc,nushio3/ghc,ml9951/ghc,snoyberg/ghc,green-haskell/ghc,vikraman/ghc,gridaphobe/ghc,gridaphobe/ghc,acowley/ghc,mcschroeder/ghc,fmthoma/ghc,mcschroeder/ghc,bitemyapp/ghc,ezyang/ghc,gridaphobe/ghc