You can delete subfolders in your personal folders. For other folders you need the appropriate permissions.
Warning: If you delete a folder, all subfolders and objects in this folder will also be deleted. Deleted subfolders and objects can not be restored.
How to delete a folder:
In the folder view, select the folder that you want to delete.
Click theicon next to the folder name. Click the button.
Confirm that you want to delete the folder.
Parent topic: Managing Data with Folders