Personally cut the wire and leave it off! I find those lights absolutely harsh on the eyes at night.
LED are known for a long life. Honestly, I have not tried to remove one. They maybe they are just pressed in with the rubber grommet holding it in and keeping it sealed. I am sure you looked, but probably at a smaller scale, have you confirmed there is no access from the backside? Sometimes the larger panel needs to be removed from the inside to gain access.
Edit: Looks to be just a push in per the Amazon images;