Hi Paul. The blue points and the line are part of a so called “overlay” that is created when you import something, not your blue kurviger route itself.
You could get rid of them for example simply by refreshing the page with F5, but that removes all of them, not just the points
Alternatively you could change the import settings when importing the file in the first place, next time you do it 
Also you can find muuuuch more info about the import in lots of forum posts, for example here: