Question: Subtracting Points from Maple 3d plot

I have a Maple pointplot3d animation and I'm looking to take out two segments of that plot.  The segments are known and are the same throughout the animation but I want to erase them from the plots.  I tried colouring them white but when you rotate it you can tell they were there, so I was wondering if there is a way of earsing them, or colouring them clear, or something to that effect.

Thank you.

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