rgwlc: remove lc entry on bucket delete

rgwlc:  remove lc entry on bucket delete

Buckets with lifecycle policies installed have a state entry that
must also be deleted when the bucket is removed.

Fixes: https://tracker.ceph.com/issues/46728
N.b., should really be generic, not specific to the RADOS store, but
there doesn't seem to be a clean model for implementing generic side
effects in Zipper, currently.

Signed-off-by: Matt Benjamin <mbenjamin@redhat.com>
(cherry picked from commit cc1e812a003e2af74fe0c69ccae08dd7aa68bbe0)

Conflicts:
	src/rgw/rgw_sal_rados.cc

Cherry-pick notes:
- Code from rgw_sal_rados.cc existed in rgw_sal.cc in Octopus