DON'T do it!
ALL of the plants' energy to grow and thrive is made by/in the leaves.
Less leaves = less energy being made = less potential growth............it's that simple!
Besides, if your plant would not NEED those leaves, it would not grow them in the first place.
Defoliation is probably the most misunderstood "thing" when it comes to plants. Unfortunately people think they have to do it just because everyone else is doing it, without ever realizing or knowing how it actually effects the plant.
It really is not required at all IMO, unless there are massive problems controlling humidity in an enclosed area during flowering.