BBVERSIONS is moderately horrible and it doesn't appear to be actually used by
anyone, so remove it to simplify the finalise codepaths.
(Bitbake rev: 0bb188f01e396052b127e170a25246d79a6d6741)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>