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

Apparently, the style needs to be agreed upon first.

llvm-svn: 240390
diff --git a/llvm/lib/Analysis/InstCount.cpp b/llvm/lib/Analysis/InstCount.cpp
index e76d26e..de2b9c0 100644
--- a/llvm/lib/Analysis/InstCount.cpp
+++ b/llvm/lib/Analysis/InstCount.cpp
@@ -64,7 +64,7 @@
     void print(raw_ostream &O, const Module *M) const override {}
 
   };
-} // namespace
+}
 
 char InstCount::ID = 0;
 INITIALIZE_PASS(InstCount, "instcount",