Remove all #ifdef COMPILER_MSVC from blaze_util_windows.cc.
Remove all #ifdef COMPILER_MSVC from blaze_util_windows.cc.

COMPILER_MSVC is really a misnomer. It really means "use native Win32
APIs instead of Unix emulation (msys)". Since we no longer develop
msys-based version, we should remove all #if (windows && !COMPILER_MSVC)
sections from the code base.

Change-Id: Ibf0f62e4077027b799885c5dcbbce2da626b281c
PiperOrigin-RevId: 167392820

ulfjack/bazel,dslomov/bazel,twitter-forks/bazel,snnn/bazel,perezd/bazel,ulfjack/bazel,safarmer/bazel,dslomov/bazel-windows,twitter-forks/bazel,aehlig/bazel,damienmg/bazel,aehlig/bazel,twitter-forks/bazel,cushon/bazel,aehlig/bazel,spxtr/bazel,ulfjack/bazel,damienmg/bazel,cushon/bazel,dslomov/bazel,davidzchen/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,safarmer/bazel,perezd/bazel,dropbox/bazel,ButterflyNetwork/bazel,twitter-forks/bazel,dslomov/bazel-windows,spxtr/bazel,ButterflyNetwork/bazel,aehlig/bazel,aehlig/bazel,perezd/bazel,dslomov/bazel,spxtr/bazel,akira-baruah/bazel,katre/bazel,dropbox/bazel,bazelbuild/bazel,snnn/bazel,akira-baruah/bazel,davidzchen/bazel,bazelbuild/bazel,akira-baruah/bazel,safarmer/bazel,cushon/bazel,werkt/bazel,perezd/bazel,dslomov/bazel,aehlig/bazel,werkt/bazel,safarmer/bazel,twitter-forks/bazel,cushon/bazel,davidzchen/bazel,damienmg/bazel,snnn/bazel,ulfjack/bazel,werkt/bazel,bazelbuild/bazel,dropbox/bazel,aehlig/bazel,meteorcloudy/bazel,damienmg/bazel,ulfjack/bazel,bazelbuild/bazel,meteorcloudy/bazel,damienmg/bazel,dropbox/bazel,perezd/bazel,dslomov/bazel-windows,perezd/bazel,akira-baruah/bazel,dslomov/bazel,akira-baruah/bazel,ButterflyNetwork/bazel,cushon/bazel,dslomov/bazel,ButterflyNetwork/bazel,dropbox/bazel,safarmer/bazel,davidzchen/bazel,davidzchen/bazel,cushon/bazel,katre/bazel,davidzchen/bazel,meteorcloudy/bazel,twitter-forks/bazel,safarmer/bazel,damienmg/bazel,twitter-forks/bazel,katre/bazel,ulfjack/bazel,werkt/bazel,dslomov/bazel-windows,katre/bazel,meteorcloudy/bazel,spxtr/bazel,damienmg/bazel,bazelbuild/bazel,perezd/bazel,snnn/bazel,dslomov/bazel-windows,bazelbuild/bazel,akira-baruah/bazel,katre/bazel,snnn/bazel,ulfjack/bazel,dslomov/bazel-windows,spxtr/bazel,werkt/bazel,dslomov/bazel,davidzchen/bazel,dropbox/bazel,snnn/bazel,meteorcloudy/bazel,spxtr/bazel,ButterflyNetwork/bazel,spxtr/bazel,katre/bazel,meteorcloudy/bazel,snnn/bazel,werkt/bazel