Removing leaves just reduces your plants capacity to make energy, thereby slowing growth.
There is absolutely no need to defoliate cannabis, especially healthy, green, energy producing leaves.
Defoliating if ever done, should not be done during or as plants are about to or in the middle of flowering, this is the time when the plant needs maximum energy to grow her biggest and best flowers. Removing leaves at these times means the plant will suffer an energy deficit, resulting in smaller and slower growing flowers. To remove leaves and then have the plant grow twice as many to replace the ones that it has lost, seems like a pretty pointless exercise to me.
Besides, if your plant did not need those leaves, it would not have grown them in the first place!
Just remember -
Maximum amount of healthy green leaves = maximum energy production = maximum growth... (including the flower size!)
Your plants will not start flowering until the nights get longer as Fall/Autumn approaches.
If you are concerned your plants have too much growth, some light, well considered "lollipopping" can reduce the amount of small irrelevant growths.
Otherwise, there is no such thing as too many leaves, your plant is healthy and doing what it is supposed to do.
Hope this helps, Organoman.