Also useful if you have a rare "duplicate" in your account and need to remedy.
Step 1:
To fully delete a profile from your Gatsby account, that profile must first be "archived". The following video shows how to archive a profile as well.
[INSERT VIDEO HERE]
Step 2:
Once archived, head into the Archived table, select the checkbox next to that profile, and click "delete".
Caution: Deleting a profile is permanent and cannot be undone.