Revert "Update Haddock submodule"
Revert "Update Haddock submodule"

This reverts commit 34d68d8e83676c5010e9bc5d4619f24879f222af
as it breaks the build:

  Configuring hsc2hs-0.67...
  Configuring ghc-cabal-0.1...
  Configuring parallel-3.2.0.6...
  Configuring hpc-bin-0.67...
  Configuring haddock-2.16.0...
  ghc-cabal: At least the following dependencies are missing:
  ghc >=7.9 && <7.11
  make[1]: *** [utils/haddock/dist/package-data.mk] Error 1
  make[1]: *** Waiting for unfinished jobs....
    GHC PKG libraries/parallel/dist-install/package-data.mk
  Reading package info from "libraries/parallel/dist-install/inplace-pkg-config" ... done.
  parallel-3.2.0.6: Warning: haddock-interfaces: /srv/builds/commits/rGHC/B3035-34d68d8e83676c5010e9bc5d4619f24879f222af/libraries/parallel/dist-install/doc/html/parallel/parallel.haddock doesn't exist or isn't a file
  parallel-3.2.0.6: cannot find any of ["Control/Seq.hi","Control/Seq.p_hi","Control/Seq.dyn_hi"] (ignoring)
  parallel-3.2.0.6: cannot find any of ["Control/Parallel.hi","Control/Parallel.p_hi","Control/Parallel.dyn_hi"] (ignoring)
  parallel-3.2.0.6: cannot find any of ["Control/Parallel/Strategies.hi","Control/Parallel/Strategies.p_hi","Control/Parallel/Strategies.dyn_hi"] (ignoring)
  parallel-3.2.0.6: cannot find any of ["libHSparal_791B1zx5CJ25cUOFECtmw0.a","libHSparal_791B1zx5CJ25cUOFECtmw0.p_a","libHSparal_791B1zx5CJ25cUOFECtmw0-ghc7.11.20150123.so","libHSparal_791B1zx5CJ25cUOFECtmw0-ghc7.11.20150123.dylib","HSparal_791B1zx5CJ25cUOFECtmw0-ghc7.11.20150123.dll"] on library path (ignoring)
  make: *** [all] Error 2

Moreover, utils/haddock is supposed to track the `ghc-head` branch
(which is what `git submodule update --remote utils/haddock` helps with)

da-x/ghc,nkaretnikov/ghc,fmthoma/ghc,gridaphobe/ghc,anton-dessiatov/ghc,mcschroeder/ghc,da-x/ghc,nkaretnikov/ghc,oldmanmike/ghc,vikraman/ghc,nkaretnikov/ghc,urbanslug/ghc,mettekou/ghc,sdiehl/ghc,ghc-android/ghc,acowley/ghc,christiaanb/ghc,vikraman/ghc,urbanslug/ghc,mfine/ghc,gcampax/ghc,shlevy/ghc,gcampax/ghc,vikraman/ghc,wxwxwwxxx/ghc,snoyberg/ghc,ghc-android/ghc,anton-dessiatov/ghc,snoyberg/ghc,urbanslug/ghc,AlexanderPankiv/ghc,mfine/ghc,sgillespie/ghc,wxwxwwxxx/ghc,shlevy/ghc,vTurbine/ghc,nkaretnikov/ghc,olsner/ghc,GaloisInc/halvm-ghc,oldmanmike/ghc,vTurbine/ghc,fmthoma/ghc,olsner/ghc,christiaanb/ghc,gcampax/ghc,oldmanmike/ghc,anton-dessiatov/ghc,christiaanb/ghc,da-x/ghc,gcampax/ghc,wxwxwwxxx/ghc,gridaphobe/ghc,snoyberg/ghc,AlexanderPankiv/ghc,elieux/ghc,da-x/ghc,mfine/ghc,tjakway/ghcjvm,anton-dessiatov/ghc,da-x/ghc,siddhanathan/ghc,mettekou/ghc,ezyang/ghc,vTurbine/ghc,mfine/ghc,snoyberg/ghc,sdiehl/ghc,AlexanderPankiv/ghc,vikraman/ghc,christiaanb/ghc,vTurbine/ghc,TomMD/ghc,vikraman/ghc,ml9951/ghc,da-x/ghc,ml9951/ghc,sgillespie/ghc,sdiehl/ghc,anton-dessiatov/ghc,TomMD/ghc,mcschroeder/ghc,shlevy/ghc,urbanslug/ghc,elieux/ghc,AlexanderPankiv/ghc,GaloisInc/halvm-ghc,mfine/ghc,gcampax/ghc,acowley/ghc,shlevy/ghc,acowley/ghc,olsner/ghc,nushio3/ghc,siddhanathan/ghc,GaloisInc/halvm-ghc,sdiehl/ghc,shlevy/ghc,sdiehl/ghc,fmthoma/ghc,TomMD/ghc,mettekou/ghc,olsner/ghc,wxwxwwxxx/ghc,ml9951/ghc,gridaphobe/ghc,mcschroeder/ghc,ml9951/ghc,snoyberg/ghc,sgillespie/ghc,oldmanmike/ghc,gridaphobe/ghc,fmthoma/ghc,mfine/ghc,fmthoma/ghc,tjakway/ghcjvm,christiaanb/ghc,nushio3/ghc,acowley/ghc,wxwxwwxxx/ghc,urbanslug/ghc,siddhanathan/ghc,urbanslug/ghc,oldmanmike/ghc,mettekou/ghc,nushio3/ghc,acowley/ghc,vikraman/ghc,vTurbine/ghc,TomMD/ghc,tjakway/ghcjvm,gcampax/ghc,GaloisInc/halvm-ghc,GaloisInc/halvm-ghc,tjakway/ghcjvm,acowley/ghc,olsner/ghc,ml9951/ghc,snoyberg/ghc,sgillespie/ghc,anton-dessiatov/ghc,AlexanderPankiv/ghc,elieux/ghc,tjakway/ghcjvm,ezyang/ghc,snoyberg/ghc,mcschroeder/ghc,sdiehl/ghc,GaloisInc/halvm-ghc,acowley/ghc,christiaanb/ghc,olsner/ghc,sgillespie/ghc,shlevy/ghc,mcschroeder/ghc,tjakway/ghcjvm,siddhanathan/ghc,mettekou/ghc,nushio3/ghc,christiaanb/ghc,ghc-android/ghc,ml9951/ghc,ml9951/ghc,shlevy/ghc,gcampax/ghc,elieux/ghc,tjakway/ghcjvm,TomMD/ghc,nushio3/ghc,olsner/ghc,ezyang/ghc,gridaphobe/ghc,urbanslug/ghc,da-x/ghc,gridaphobe/ghc,fmthoma/ghc,ghc-android/ghc,wxwxwwxxx/ghc,anton-dessiatov/ghc,ezyang/ghc,elieux/ghc,mettekou/ghc,ghc-android/ghc,oldmanmike/ghc,ghc-android/ghc,AlexanderPankiv/ghc,mettekou/ghc,nkaretnikov/ghc,mcschroeder/ghc,ghc-android/ghc,siddhanathan/ghc,siddhanathan/ghc,elieux/ghc,ezyang/ghc,mfine/ghc,ml9951/ghc,nushio3/ghc,vTurbine/ghc,ezyang/ghc,nkaretnikov/ghc,elieux/ghc,TomMD/ghc,fmthoma/ghc,GaloisInc/halvm-ghc,gridaphobe/ghc,nushio3/ghc,wxwxwwxxx/ghc,ezyang/ghc,mcschroeder/ghc,vTurbine/ghc,siddhanathan/ghc,sgillespie/ghc,AlexanderPankiv/ghc,oldmanmike/ghc,nkaretnikov/ghc,TomMD/ghc,vikraman/ghc,sgillespie/ghc,sdiehl/ghc