Deleting resonators on my exhaust

It won't affect emissions or smog testing, it may allow a slightly more free flowing exhaust (with some minimal HP gain). Resonators exist to reduce harmonic frequencies that occur with exhaust noise, ie droning. Most states don't have any laws against removing them, even in CA. The real question is whether you will like the sound from your exhaust without them, as droning noises inside the vehicle will drive you batty in short order.