Q: In the podcast menu on my second-generation Apple TV there is an audio podcast that I unsubscribed to years ago, even before I bought the Apple TV. It only shows up on the Apple TV menu—not in iTunes. I have searched all subfolders in the iTunes folders and can’t find any sign of it. Any idea how I can delete it once and for all? - Mark A: For whatever reason, podcasts unsubscribed to or deleted from the Podcasts listing in iTunes don’t…