Believe me it's better than trying to remove the corroded remains of mild steel pins held in the holes by rust and aluminium oxide.
Been there, and replaced them all with stainless after having to make a jig and drill the remains of each one out of the shaft once I'd removed it from the trailer
As Martini says, you shouldn't really use them again so just cut them off flush with the shaft and pull them out or knock them through the hole with a punch.
Nasher