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/CodeGen/MachineFunctionPrinterPass.cpp b/llvm/lib/CodeGen/MachineFunctionPrinterPass.cpp
index 57b7230..790f5ac 100644
--- a/llvm/lib/CodeGen/MachineFunctionPrinterPass.cpp
+++ b/llvm/lib/CodeGen/MachineFunctionPrinterPass.cpp
@@ -49,7 +49,7 @@
 };
 
 char MachineFunctionPrinterPass::ID = 0;
-} // namespace
+}
 
 char &llvm::MachineFunctionPrinterPassID = MachineFunctionPrinterPass::ID;
 INITIALIZE_PASS(MachineFunctionPrinterPass, "machineinstr-printer",