someone that know more than me will chime in, but I would not think that honing or polishing your choke would be a good thing. A lot of choke makers build wad stripper in their choke design to slow the wad down. By honing and or polishing I would think you stand a strong chance of removing, and or reducing the desired effect of the wad stripper.
In my mind cleaning the choke is good, polishing or honing would be bad.