You can permanently remove a project from Project → Settings in the Danger zone at the bottom of the page.
Deleting a project cannot be undone. According to the in-product copy, all project data, configurations, and deployments will be permanently removed. Export or back up anything you must keep before proceeding.
If deletion fails, an error notification is shown; retry after checking permissions or contact support if the problem persists.
Only users who are allowed to manage the project can delete it. If you do not see the action or the request fails, ask an organization admin to review your role or complete the deletion.