Grate the zucchini and place between paper towels, press to remove excess moisture. Chop walnuts, not to fine. Mix the flaxseed meal with the water and set aside for about 5 minutes. In a separate bowl, combine the flours, salt, baking soda, baking powder, cinnamon, and cocoa. Add the oil, vanilla, milk and sugar to the flaxseed eggs. Make a well in the dry ingredients, pour in the wet ingredients, and mix together. Add the zucchini, walnuts and chocolate chips. Mix well. Spray two 9″ x 5″ pans with non-stick spray. Add 1/2 of the bread batter to each pan. Bake in a 350 degree oven 50-60 minutes until a toothpick comes out clean. Cool about 10 minutes before removing from pans. Enjoy!!!!