To delete a wish list, it must first be archived. Please follow these steps to archive a wishlist: How to Archive a Wishlist.
Once the wishlist has been archived, click on the menu in the top right corner and select 'Archived and Expired.' A summary of all archived wishlists will be displayed. Choose the wishlist you wish to delete and click on the icon with three black dots. Click on 'Delete,' and a pop-up window will open asking you to confirm your action. Select 'Delete' to complete the action.