0 to officially announce that something such as a law, agreement, or marriage no longer exists -- anular
1 to declare (that something is) not valid and cancel (especially a marriage or legal contract) -- anular
That is why the legislation was annulled.
If there is a request for a referral because there is no quorum, the point is not carried forward, it is annulled.
How, then, is it to be annulled now?