remove unneeded llvm:: namespace qualifiers on some core types now that LLVM.h imports
them into the clang namespace.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135852 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/CIndexDiagnostic.cpp b/tools/libclang/CIndexDiagnostic.cpp
index 0fcdab7..d9b515b 100644
--- a/tools/libclang/CIndexDiagnostic.cpp
+++ b/tools/libclang/CIndexDiagnostic.cpp
@@ -220,11 +220,11 @@
     return createCXString("");
   
   unsigned ID = StoredDiag->Diag.getID();
-  llvm::StringRef Option = DiagnosticIDs::getWarningOptionForDiag(ID);
+  StringRef Option = DiagnosticIDs::getWarningOptionForDiag(ID);
   if (!Option.empty()) {
     if (Disable)
-      *Disable = createCXString((llvm::Twine("-Wno-") + Option).str());
-    return createCXString((llvm::Twine("-W") + Option).str());
+      *Disable = createCXString((Twine("-Wno-") + Option).str());
+    return createCXString((Twine("-W") + Option).str());
   }
   
   if (ID == diag::fatal_too_many_errors) {