POLK COUNTY—Gunnar Alm happily hit the road Sunday afternoon, leaving Polk County to return to his dorm room at North Carolina State. Alm didn’t hear his name called during this weekend’s Major League Baseball Draft, but it wasn’t due to a lack of interest. Nearly half of MLB’s 30 teams called Alm and his agent on Saturday and Sunday and expressed interest in selecting the recent Polk County graduate. But Alm and his team had already agreed on h…