NetApp
7-mode/HA pair/V-Series : Configuration : System Tools : Licenses : Deleting a license
Deleting a license
You can delete a software license from the Licenses window.
About this task 
Your storage system requires certain software licenses to enable some services and features. Before deleting a software license, check the list of required licenses in License Requirements.
Steps 
1.
From the Home tab, double-click the appropriate storage system to display a subtree of management features.
2.
Click Configuration > System Tools > Licenses to display the Licenses window.
3.
Select the software license you want to delete, then click Delete.
The system displays a confirmation window.
4.
Select the check box and click Delete.
The selected software license is deleted.