United Airlines might kick you off a flight if you don’t use headphones to listen to devicesBlasting music, your favorite podcast, or your bestie’s TMI voicemail for all to hear can be an annoying experience for those nearby. But one airline isn’t just looking down on passengers who allow sounds from their devices to be overheard by those around them. They’re kicking them off planes.In a newly released policy, United Airlines said it would ban passengers who don’t a...