Delete webhook

Delete a webhook endpoint owned by the authenticated seller.

Use this endpoint to remove deprecated integrations, rotate to a replacement endpoint, or clean up unused environments.

Behavior notes:

• Deletion is permanent for the webhook record.
• Returns 204 with no response body when deletion succeeds.
• Returns 404 when the webhook does not exist or is not owned by the current seller.

Safe rollout guidance:

1. Create and verify a replacement endpoint first when continuity is required.
2. Disable the old endpoint before deletion if you want a staged cutover.
3. Call GET /seller/webhooks to confirm the endpoint has been removed.