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/Transforms/IPO/GlobalOpt.cpp b/llvm/lib/Transforms/IPO/GlobalOpt.cpp
index 0d83c82..cc4a79f 100644
--- a/llvm/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/llvm/lib/Transforms/IPO/GlobalOpt.cpp
@@ -89,7 +89,7 @@
     TargetLibraryInfo *TLI;
     SmallSet<const Comdat *, 8> NotDiscardableComdats;
   };
-} // namespace
+}
 
 char GlobalOpt::ID = 0;
 INITIALIZE_PASS_BEGIN(GlobalOpt, "globalopt",
@@ -2786,7 +2786,7 @@
       setUsedInitializer(*CompilerUsedV, CompilerUsed);
   }
 };
-} // namespace
+}
 
 static bool hasUseOtherThanLLVMUsed(GlobalAlias &GA, const LLVMUsed &U) {
   if (GA.use_empty()) // No use at all.