[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/test/CodeGenCXX/cfi-ms-vbase-derived-cast.cpp b/clang/test/CodeGenCXX/cfi-ms-vbase-derived-cast.cpp
index 3276d8f..6142ca5 100644
--- a/clang/test/CodeGenCXX/cfi-ms-vbase-derived-cast.cpp
+++ b/clang/test/CodeGenCXX/cfi-ms-vbase-derived-cast.cpp
@@ -8,7 +8,7 @@
 template <typename T>
 struct bar : virtual public foo {
   void f() {
-    // CHECK: define{{.*}}@"\01?f@?$bar@Ubaz@@@@UEAAXXZ"
+    // CHECK: define{{.*}}@"?f@?$bar@Ubaz@@@@UEAAXXZ"
     // Load "this", vbtable, vbase offset and vtable.
     // CHECK: load
     // CHECK: load