I applied to physics programs, and now I've been accepted to top-20 programs with big fellowships. I also applied to a safety school, which I don't think has any possibility of offering me anything more in terms of research, funding, or academics, so I would like to remove my application from the pool and allow any spot I might get to someone who is still considering the program. There isn't a link to do this automatically, as I've heard others talk about before, so I'm wondering: how can I tell the admissions committee I'm not interested?