Head over to Keywords Explorer.
Choose the list you want to edit or remove on the Keywords Explorer dashboard, and click 3 dots on the right:
When you click it, there will be three options to choose from — Edit, Move to and Delete.
Edit allows you to edit any part of the keyword list, including the list's name, location, and keywords inside.
Move to allows you to change the dashboard folder that the keyword list is inside.
Delete allows you to delete the keyword list completely.