Now, hold your horses, haterz. You too, Beliebers, don’t you start. Just because Justin Bieber told LA’s Power 106 that he’s retiring doesn’t mean it’ll actually happen. TMZ says they spoke to someone in Camp Bieber who said the Biebs was “joking” and, well, it doesn’t sound like a joke, but maybe that’s part of the genius. Bieber hasn’t said anything about it since, and his reps are keeping quiet, so we’ll just have to let this one play out …