Overview:
If you would like to delete a folder, you can go to your Lists > hover over the folder you would like to delete > then right-click the folder to open the dropdown that will give you an option to "Delete Folder".
IMPORTANT!
Deleting a Folder will also DELETE all the Lists you have inside this Folder, so make sure you move these Lists outside the Folder before deleting the Folder completely!
Have questions about deleting Folders? Contact support@dovetale.com