Delaunay mesh problem

Is there any way to avoid these “X” marked places to happen while using Delaunay mesh component in Grasshopper?

delaunay (9.3 KB) contours.3dm (72.6 KB)

Yes, find a condition which finds those faces and use a Boolean pattern with the Cull Mesh Faces component.

sorry, but can you explain what you meant further please?

See attached

delaunay mesh (27.9 KB)