YouTube only recently came to Windows Phone 8 as a full-fledged app, but its availability may be short-lived. According to documents obtained by The Verge, Google has requested that Microsoft remove the app from it Windows Phone Store -- and disable installations on devices -- immediately. The reason? Apparently the app didn't get Goog's stamp of approval before going live, and it blocks the ads that typically run on YouTube. Naturally, ads are an important source of revenue for both Google and no shortage of third parties, so Mountain View may not be out of line for crying foul. T