[MS] Don't escape MS C++ names with \01

It is not needed after LLVM r327734. Now it will be easier to copy-paste
IR symbol names from Clang.

llvm-svn: 327738
diff --git a/clang/lib/CodeGen/MicrosoftCXXABI.cpp b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
index 221ee76..d7fac79 100644
--- a/clang/lib/CodeGen/MicrosoftCXXABI.cpp
+++ b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
@@ -3429,7 +3429,7 @@
 //   mangled into them so they can be aggressively deduplicated by the linker.
 
 static llvm::GlobalVariable *getTypeInfoVTable(CodeGenModule &CGM) {
-  StringRef MangledName("\01??_7type_info@@6B@");
+  StringRef MangledName("??_7type_info@@6B@");
   if (auto VTable = CGM.getModule().getNamedGlobal(MangledName))
     return VTable;
   return new llvm::GlobalVariable(CGM.getModule(), CGM.Int8PtrTy,