The user management admin: Delete user from Office 365 is the user who has a license.You can see the name of the users that you want to delete by selecting the names of the users that you want to delete.
How do I delete a deleted account in Office 365?
1. In the Office 365 admin center, go to the admin center administration.2. Select users.3. Select the name of the users.4. Select more options (…), and then select Delete user. You’re still paying for the license.