If they are biting due to aggressiveness then yes, spaying/neutering will go away. Young rabbits can have nibbling issues - I actually named one of our baby rabbits Nibbles cuz she nibbles. It's not hard, but I tell them NO, that we only give loves and snuggles and then I give them kisses and snuggles, pets. If they bite again, I nip their ear and say the same thing...this usually works just fine. Also, you can try putting them away when they bite...they need to know it is not ok; but please pay attention to when they bite.
If I have food on my hands/providing a treat, etc. expect they might get your finger thinking it's the treat...I do not "reprimand/scold" my bunnies; when they are scared (breathing hard, eyes wide, skittish, etc), when I have food smells on my hand(s), etc.
I pay close attention to my buns, most will nudge me with their nose, and pretty hard sometimes when they are "done" - they don't need to bite. But I have had a few biters and nipping the ear checked them...and I usually only need to do it once or twice.