gettext.bbclass: do not add virtual/gettext to DEPENDS
gettext has a notoriously slow configuration step, and so in my testing
this greatly speeds up building core-image-minimal: from 21m36s to 19m2s
(empty sstate and tmp, but pre-populated downloads).
I have also built world, and core-image-sato to make sure it doesn't break
or modify the build, and there is no difference whatsoever in packages
and images content. Target gettext seems not to be used for anything.
Also fix up insane.bbclass to remove the corresponding QA check.
Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
