Remove one obsolete piece of code, that I originally imported from

upstream clang r266775, but got moved around later in upstream r266797.

contrib/llvm/tools/clang/lib/Driver/Tools.cpp

@@ -6616,12 +6616,6 @@ void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
   // FIXME: Stop lying and consume only the appropriate driver flags
   Args.ClaimAllArgs(options::OPT_W_Group);
 
-  // Assemblers that want to know the dwarf version can't assume a value,
-  // since the defaulting logic resides in the driver. Put in something
-  // reasonable now, in case a subsequent "-Wa,-g" changes it.
-  RenderDebugEnablingArgs(Args, CmdArgs, CodeGenOptions::NoDebugInfo,
-                          getToolChain().GetDefaultDwarfVersion(),
-                          llvm::DebuggerKind::Default);
   CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
                                     getToolChain().getDriver());