Merge branch 'hsr-hsr-code-refactoring'

Taehee Yoo says:

====================
hsr: hsr code refactoring

There are some unnecessary routine in the hsr module.
This patch removes these routines.

The first patch removes incorrect comment.
The second patch removes unnecessary WARN_ONCE() macro.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>