Sight Visibility Analysis

How to delete the Sight Visibility Analysis report after the sight Visibility analysis is completed and the minimum sight distance is not achieved? Or We have to create the new Sight visibility scenario by changing the Speed and minimum distance requirements?

The model becomes too much busy(covered) due to the multiple Sight distance lines going across the alignment. When Going through the sight visibility results, there is no available option to delete the sight visibility analsyis.