Geeks knew something was up at G4 when the cable channel canceled its flagship programs “Attack of the Show” and “X-Play.” Turns out they were right to suspect they’d be losing their home base on television, as the Hollywood Reporter has discovered that NBCUniversal will rebrand G4 as the Esquire channel. Under a deal with the magazine’s parent Hearst Corporation, the new network will attempt to attract metrosexuals underserved by adrenaline-fueled brands like Spike and History with…