Delete surface curve removes a surface curve from the surface. This can change the shape of the surface. You cannot delete a boundary curve.
To use Delete surface curve:
button and select it in the graphics window.
button and select a curve in the graphics window.This edit breaks the link between the surface and the method originally used to construct it. You cannot open the surface's Properties dialog and modify it based on the parameters that originally defined it as those parameters no longer apply directly to this surface.