When Google bought Bump in September, Bump CEO and co-founder Dave Lieb told users of its Bump and Flock apps to "stay tuned for future updates." That update came New Year's Eve, and it wasn't welcome news for fans of the mobile file-sharing apps: Bump and Flock are going away.Specifically, the two apps will disappear from both the iOS App Store and Google Play on Jan. 31, according to an announcement on the Bump blog that posted on Thursday. The Jan. 31 shutdown date aims to give users enough time to retain any data stored in either Bump or Flock. At the end of the month, neither app will work any more, with all user data deleted, according to Bump's Lieb. Both apps contain instructions on exporting your data.Bump and Flock are being discontinued as the Bump team turns its attention elsewhere. "We are now deeply focused on our