1. Open the Users section.

2. Click on the three-point sign next to the user.

3. Select Delete.

4. Confirm the deletion.

Now the user has no access to the current account.

Features 

1. If a user is a part of several accounts and you want to delete this user from all of them, you should do the steps above from each account.
2. If a permanent API token was issued by a user who is going to be deleted, first delete the required token, otherwise, an error will appear.
   
   
3. After deleting a user, in the API tokens section, his name and email address will be crossed out next to the tokens issued by him, and a hint will be displayed: