It did come up twice but I've merged them for you.
Are you meaning spikes or canes? What I can see in the pics are canes (with up the length). If that's the bit you mean then you should leave them. If there is a spike out the top of that then it should be removed, but NOT the cane.
The canes store energy for the plant which is used to sustain the new growth. Once a plant has a lot of them you can remove the oldest that have lost leaves, or even split the plant, but with your plant I would not do that, you need that stored energy to give strength to the new growth.
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