Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)

Apparently, the style needs to be agreed upon first.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240390 91177308-0d34-0410-b5e6-96231b3b80d8

lib/ProfileData/CoverageMappingWriter.cpp

@@ -74,7 +74,7 @@ public:
     return C;
   }
 };
-} // namespace
+}
 
 /// \brief Encode the counter.
 ///