The purpose of the Avionic Smoke procedure is to reduce or eliminate the source of the fire. If the origin of the fire is suspect to be electric/wiring (or can not be determined, as electrical smoke/fire is deemed the most severe case), this is archived by shedding all non essential loads, i.e. by placing the aircraft in Electrical Emergency Configuration. Therefore the objective is to stay in Electrical Emergency Configuration until shortly before landing and then restore normal electrical configuration, to enable normal braking. This is why you do not reset the generators in this case.