Do I take my card off the App Store

Ignore my previous post.

Please see Diavonex's reply as it is accurate.

After establishing the Credit Card account (i.e. after you have made purchases), you can remove the credit card information by editing your payment info, choosing "None".

Settings>iTunes and App Stores>Apple ID>View Apple ID>Sign-in>Payment Information

Why I cannot select "None" for payment.

http://support.apple.com/kb/TS5366