I remembered removing the license plate lights on a '97 CX hatch, but those were just held in by two Phillips screws, so I figured you couldn't have overlooked that.
But I knew that in 1998 Honda added a lift handle to the rear, right above the license plate. So that could very well have changed the design of the license plate lights.
So I checked on HondaPartsDeals.com for a pic and what do you know, there it is.
Here's the little image I made from their pic to better explain.
Looks like the '96-'97 hatches have license plate lights held in with two Phillips screws, but the '98-'00 hatches have some sort of clip in license plate light assembly.
I'm not sure how hard they'll be to remove, but I'd imagine this means they can be pried out.