This is not normally necessary. They are no more uncomfortable in summer than most other breeds. The undercoat is most likely to mat just before "bolting", which is when the undercoat is shed. Continual grooming eliminated a need for drastic measures. Huskies do not develop "doggy odors" for the most part.
You should never shave or cut a siberian huskies coat. The coat keeps the dog warm in winter and cool in summer. It doesn't take much grooming except for when it's shedding.