Three way light switch

Yes it can be done, but there are a lot of ways a 3 way can be wired. To make a long story short you simply need to attach wires together at the deleted switch location so you end up with the hot leg, and the switch leg back at the location you want to change to a single pole. Then install a proper blank cover at the deleted location (do not cover the old box with plaster or a cabinet). Be sure to turn off the circuit! If this doesnt explain it for you please call a licensed electrician. Mr. Electric