Remove unused LangOpts private variable in HeaderSearch.

Was causing warnings during the build.

llvm-svn: 267805
diff --git a/clang/lib/Lex/HeaderSearch.cpp b/clang/lib/Lex/HeaderSearch.cpp
index 4e88248..e989e3d 100644
--- a/clang/lib/Lex/HeaderSearch.cpp
+++ b/clang/lib/Lex/HeaderSearch.cpp
@@ -56,8 +56,7 @@
                            const LangOptions &LangOpts,
                            const TargetInfo *Target)
     : HSOpts(HSOpts), Diags(Diags), FileMgr(SourceMgr.getFileManager()),
-      FrameworkMap(64), ModMap(SourceMgr, Diags, LangOpts, Target, *this),
-      LangOpts(LangOpts) {
+      FrameworkMap(64), ModMap(SourceMgr, Diags, LangOpts, Target, *this) {
   AngledDirIdx = 0;
   SystemDirIdx = 0;
   NoCurDirSearch = false;