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/InstCombine/InstCombinePHI.cpp b/llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp
index a93ffbe..6a6693c 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp
@@ -582,7 +582,7 @@
   LoweredPHIRecord(PHINode *pn, unsigned Sh)
     : PN(pn), Shift(Sh), Width(0) {}
 };
-} // namespace
+}
 
 namespace llvm {
   template<>
@@ -603,7 +603,7 @@
              LHS.Width == RHS.Width;
     }
   };
-} // namespace llvm
+}
 
 
 /// SliceUpIllegalIntegerPHI - This is an integer PHI and we know that it has an