[opt-viewer] Remove unnecessary call to demangle

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283898 91177308-0d34-0410-b5e6-96231b3b80d8

utils/opt-viewer/opt-viewer.py

@@ -60,7 +60,7 @@ def message(self):
         # Args is a list of mappings (dictionaries) with each dictionary with
         # exactly one key-value pair.
         values = [self.getArgString(mapping.items()[0]) for mapping in self.Args]
-        return demangle("".join(values))
+        return "".join(values)
 
     @property
     def RelativeHotness(self):