You can use either the Delete Section or the Replot Section feature to delete points - click the toolbox symbol in the corner of the route planner map to access these.
Perhaps you could share what you found Gary?? I am trying to do exactly that now, delete superflous points in just a small section of my route.
Nevermind. Found it.
Is there a way to delete extra points when editing a route in drag mode? When shortening a route or significantly changing something, it would be so much easier to delete some points rather than click and dragging all of them between the points you want to change.