If an application is no longer required, you do have the option to cancel the application directly from the platform.
To do so, click on "Candidate Overview" in the left-hand side menu. Then click on the name of the applicant in the list that appears.
Then click into the package icon for the package that has been ordered. On the resulting page you will see a "Cancel Order" button in the middle right of the screen.
Select the "Cancel Order" button and a confirmation box will appear asking you to confirm the cancellation. Simply click "Yes, Proceed" in this box to cancel the order.