You can delete a list view when you no longer need it.
|Available in: Group, Professional, Enterprise, Performance, Unlimited, and Developer Editions|
|To delete public list views||“Manage Public List Views”|
These steps work in Lightning Experience. If you see the App Launcher icon () on the left side of the navigation bar at the top of your screen, you're in Lightning Experience. If not, you're in Salesforce Classic.
Select a list view.
Click to access List View Controls.