Wow. That thing is doing great Dan, good to hear.
You can leave them or remove the pups. Just remember that when the banana does finally bloom, maybe a 2 years down the road, the banana that produced the flower stalk will die.
Try to dig around the area where the pup is and then cut it from the main plant as close as possible to the trunk.
Being that the pups are just now forming nor sure if they will have any roots yet or not.
In my experience it works best if they have a root or two before you remove them.
Let them sit out a couple days in the shade or inside the house and callous over.
You might also want to leave the exposed cut on the main plant exposed to to give it a chance to callous over also.
It happens pretty quick with the bananas.