Remove redundant publication date attribute
Remove redundant publication date attribute

The attribute made sense before we changed it in commit ba1a6b4c. Since
then, all milestones have the same date, so the attribute doesn't affect
the test at all.

consul/consul,consul/consul,usabi/consul_san_borondon,consul/consul,usabi/consul_san_borondon,usabi/consul_san_borondon,usabi/consul_san_borondon,consul/consul,consul/consul