Remove Issue Number, Valid From / Start Date in the Webstore Checkout Payment Page

In order to remove the Issue Number and Valid From / Start Date fields in the Webstore Checkout Payment Page, perform the following steps:

1. Navigate to Setup > Accounting > Accounting Lists.
2. In the Type dropdown at the bottom of the page, select Payment Method.
3. Click the Edit link next to the credit card payment methods.
4. If the Debit Card checkbox is enabled, uncheck that option. Do this for all  credit card payment methods.
5. Click Save.