Google Wallet's prepaid card concept has been plagued with its share of security concerns, and though Mountain View seems to have sorted out those issues, it's now phasing out the prepaid card program entirely. The service was intended to make up for a limited choice in debit and credit cards, and now that Google Wallet accepts any and all plastic, the prepaid option is a bit moot. The cut-off date for adding funds to a Google prepaid card is September 17th, and the prepaid option will vanish entirely on October 17th. Google says you can r