Years ago, Microsoft had a bold vision for the future of computing. That’s the vision Microsoft was building with Windows 8, with Windows Phone, and most intriguingly, with Xbox. Today, the input device that made it all possible on a television screen — the Kinect — will no longer be bundled with every new Microsoft game console. For now, the $499 Xbox One bundle still exists, but consumers will soon be able to save $100 by sacrificing the cameras and microphones that let the system respond to your gestures and voice commands.