It's a hell of a lot better than OP's take that you can't delete it at all.

Click 1: Open profile switcher

Click 2: See all profiles

Click 3: Choose page I want to delete

Click 4: Open profile switcher

Click 5: Settings & Privacy

Click 6: Settings

Click 7: Access and Control

Click 8: Change radio button from default "Deactivate Page" to "Delete Page"

Click 9: Continue

Click 10: Option to download data, continue.

Click 11: Password confirmation, continue.

Click 12: Confirm deletion, no take backs, do not pass go, do not collect $200.