There is currently no setting to prevent the “Payment Status Check” email from being sent.
However, you can change when this email is sent (how many days before the Payment Deadline it is sent).
If the Payment Deadline is set to “24 hours after winning,” the emails are sent as follows:
The “Winner Notification” email is sent when a customer wins.
Then, the “Payment Status Check” email is sent at 24:00 (midnight) on the same day the Winner Notification email was sent.
The two emails are not sent at the same time. However, depending on when the Winner Notification email is sent, the emails may arrive relatively close together.