If you added primitives to a mesh surface using the Specify Points Tool, you can use the same tool to permanently delete them from the Description.
You can also cull primitives to temporarily remove them from the preview and renders. See Cull XGen primitives.
For information about adding primitives using the Specify Points Tool, see Specify locations for primitives and archive geometry.
The point markers no longer display.
When previewed the primitives at the deleted points no longer display.