Thank you for writing.
You can use the PointSize property of the LineSeries to control the size of the points. Setting it to (0,0) will stop them from rendering. Here is a code snippet:
LineSeries lineSeries =
lineSeries.PointSize = SizeF.Empty;
I hope this will be useful. Should you have further questions, I would be glad to help.
All the best,
the Telerik team