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/Target/PowerPC/PPCLoopPreIncPrep.cpp b/llvm/lib/Target/PowerPC/PPCLoopPreIncPrep.cpp
index 1891b63..b6e7799 100644
--- a/llvm/lib/Target/PowerPC/PPCLoopPreIncPrep.cpp
+++ b/llvm/lib/Target/PowerPC/PPCLoopPreIncPrep.cpp
@@ -87,7 +87,7 @@
     LoopInfo *LI;
     ScalarEvolution *SE;
   };
-} // namespace
+}
 
 char PPCLoopPreIncPrep::ID = 0;
 static const char *name = "Prepare loop for pre-inc. addressing modes";
@@ -113,7 +113,7 @@
   protected:
     ScalarEvolution *SE;
   };
-} // namespace
+}
 
 static bool IsPtrInBounds(Value *BasePtr) {
   Value *StrippedBasePtr = BasePtr;