boto{2,3}: rm functional.test_s3.test_lifecycle_rules_conflict
boto{2,3}: rm functional.test_s3.test_lifecycle_rules_conflict

The assumption that there may be only one rule per prefix has
been removed.  The rules specifically tested here--without tag
filters--do overlap but are not in conflict.

I am proposing to remove altogether rather than writing new
deconfliction logic.

Signed-off-by: Matt Benjamin <b5ea062884a8f3dc969ff57d1008615447c56296@redhat.com>

robbat2/s3-tests,andrewgaul/s3-tests,timuralp/s3-tests,robbat2/s3-tests,ceph/s3-tests,ceph/s3-tests,jmunhoz/s3-tests,andrewgaul/s3-tests,jmunhoz/s3-tests,timuralp/s3-tests