If your talking about two sprouts that is rare. I would let them live, do you have any pics?

Not the best picture. You can see the sprouts crossing each other.

That is unusual and cool. I would leave them be and get that potted ASAP and give it as much sun as posible. It looks like next week is a real cool down for us in the north. low 80s and high 70s will feel great but coconuts love the high 80s and 70s at night.

Yeah, it's pretty rare, keep both spears. Sometimes, all 3 eyes have embryos, and the embryos will form twins or triplets in each eye. There have been recorded cases of as much as 11 palms all coming from the same coconut, but that is very, very rare (given the number of coconuts in the world, and the number of recorded instances, maybe close to 1 in a billion)

Ive never even heard of it so definitely keep them both and take good care of it! Eventually when it gets way too big you might want to sell it to someone south (it could be worth a LOT of money) and until then keep the rare plant! Keep us updated on how it does. Im interested in how it grows!
Good luck!
-Alex