So iCloud and iOS 5’s new Photo Stream feature is, conceptually, a great one: any photo you shoot—provided you’re on Wi-Fi—can instantly be accessed across all of your devices, and even used as a screensaver for your Apple TV. But what if you shot something you didn’t want to have plastered all over your TV, only to realize that there’s no simply way to remove a single photo? Well, you either have to live with it…