BitBake has the exact same code as oe.utils.contains so there's no
reason to duplicate it. We now rely on the bb.utils.contains code for
metadata.
(From OE-Core rev: 93499ebc46547f5bf6dcecd5a786ead9f726de28)
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>