(Reuters) — Facebook will no longer feed user phone numbers provided to it for two-factor authentication into its “people you may know” feature, as part of a wide-ranging overhaul of its privacy practices, the company told Reuters. Revelations last year that Facebook was using personal data obtained for two-factor authentication to serve advertisements enraged privacy advocates, who called the practice deceptive and said it eroded trust in an essential digital security tool. It had already stopped allowing those phone numbers…