Rip out a bunch of code for invoking gcc from clang.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167567 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/WindowsToolChain.cpp b/lib/Driver/WindowsToolChain.cpp
index ac65187..a93702e 100644
--- a/lib/Driver/WindowsToolChain.cpp
+++ b/lib/Driver/WindowsToolChain.cpp
@@ -37,12 +37,7 @@
 
 Tool &Windows::SelectTool(const Compilation &C, const JobAction &JA,
                           const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
-
+  Action::ActionClass Key = JA.getKind();
   bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
                                              options::OPT_no_integrated_as,
                                              IsIntegratedAssemblerDefault());