By David Whipkey   They were considered to be the most ballyhooed recruiting class by Pitt in almost a quarter of a century. Now, it is time for these Panthers to step up and deliver on coach Dave Wannstedt's promise of delivering a championship. In 2006, Wannstedt brought decorated players such as offensive lineman Joe Thomas, all-purpose back Dorin Dickerson, and tight end Nate Byham into the fold. One year later, quarterback Pat Bostick was plucked from Eastern Penn...