question

First of all, I'd like to challenge this setup. That is a ridiculous amount of decision points mashed together, and there's probably a better way to achieve what you want. For example, you may be able to use a conveyor spacing setting or add a conveyor motor. Can you describe what problem you are trying to solve here?

To answer your question as-is: you can right click it and from the Edit menu deselect "Show 3D shape" to hide a single DP. Or if you open the conveyor system from the toolbox, there is an option "Show Decision Points" that will hide them all.