These no longer even work, and it's much better to just see all warnings
and fix them as they happen.
(Bitbake rev: 62d96ea2afbb0cfdb0d1f932dc96643e7bcd7f26)
Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>