Remove useless 'llvm::' qualifier from names like StringRef and others that are
brought into 'clang' namespace by clang/Basic/LLVM.h


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172323 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 3426262..9f7e97c 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -1122,7 +1122,7 @@
   class NVPTXTargetInfo : public TargetInfo {
     static const char * const GCCRegNames[];
     static const Builtin::Info BuiltinInfo[];
-    std::vector<llvm::StringRef> AvailableFeatures;
+    std::vector<StringRef> AvailableFeatures;
   public:
     NVPTXTargetInfo(const std::string& triple) : TargetInfo(triple) {
       BigEndian = false;
@@ -4443,7 +4443,7 @@
   class SPIRTargetInfo : public TargetInfo {
     static const char * const GCCRegNames[];
     static const Builtin::Info BuiltinInfo[];
-    std::vector<llvm::StringRef> AvailableFeatures;
+    std::vector<StringRef> AvailableFeatures;
   public:
     SPIRTargetInfo(const std::string& triple) : TargetInfo(triple) {
       assert(getTriple().getOS() == llvm::Triple::UnknownOS &&