In local testing this appears to not be needed any more. Since the bash dependency
is painful in many different ways, particularly being injected at do_package time,
drop it all.
(From OE-Core rev: b30c1e5805b3f108a2d0a30259b50b9e7db0f6cc)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>