It only printed a warning since Yocto 2.4,
documented to be removed in a future release.
(From OE-Core rev: 8976319d5ba0c9d4dbcee9b5226c105df30a2166)
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>