Revert r240270 ("Fixed/added namespace ending comments using clang-tidy").

llvm-svn: 240353
diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index 7ad2fec..0feeaa0 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -293,8 +293,8 @@
     return Seq[Index];
   }
 };
-} // namespace yaml
-} // namespace llvm
+}
+}
 
 namespace clang {
 namespace format {