Penn State hosted St. Louis wide receiver Corey Simms to Happy Valley to open June to kick off a stretch of four official visits slated this summer. Wednesday afternoon, he amended course. Announcing his decision via social media, the On3’s Industry Rankings four-star prospect has narrowed his choices to Penn State, Southern Cal, and Missouri. Simms picked up his Nittany Lions offer in October, then visiting campus for the first time on a junior day in January. He will make his decision on June 30.Expected to be among the finalists in the race for Simms’ services, Nebraska dropped off the circ…