Deleting everything from the vault

Hi, as I mentioned in my previous question, I decided to delete everything from my vault before changing the password. After I deleted everything from the un-locked/mounted vault, I locked/unmounted it and looked into the folder where the actual encrypted content is stored. And I discovered 1024 empty sub-folders under the folder “d”. Do they have to be there? Or can all the sub-folders of “d” be deleted too when I simply want to get rid of everything inside the vault?

Note: As a partly-Win7 user, I’m using Cryptomator v1.5.17, which uses the older type of vault.

You can delete anything in d if you want to erase the content of your vault.
The remaining folders are just there because of incomplete „housekeeping“ when deleting everything in your vault.