How to delete a street section classic that is no longer available in Confirm

Products affected: Confirm®

The attached document shows a street section and street section details screens with imported associated date. How do you delete this street section classic if its no longer available?

To achieve this kindly delete the mentioned Date Type from the corresponding Feature Group of the feature (from the Date Type tab) and then deleting the same from the Date Type lookup located within the Feature Lookups folder.
UPDATED:  July 7, 2017