Im in Ny where front plates are mandatory as well. I have never had a front plate on my cars since I was in HS, and i cant remember a single time that i was pulled over specifically for that reason. And when Ive been pulled for other things like speeding or whatever they have very rarely brought up my lack of plate (same thing for my illegally dark window tint). And i always use the same reason when they ask why... One of the screws fell out and i didnt want it dangling there while i got a new one, and i always just keep the plate in the trunk. 13 years of driving so far and never a front plate ticket, knock on wood.
i say get rid of it