CEDAR RAPIDS — Lawyers for a former Barnstormers youth basketball coach, charged in federal court with child pornography and related charges, asked a judge Thursday to not allow video evidence of naked teenage boys at trial, claiming the evidence was obtained illegally. Mark Meyer, lawyer for former coach Greg Stephen, 42, said a contractor, Vaughn Ellison, removed a USB device from a hidden camera in Stephen’s bathroom without his permission, which is theft.