By Matt Audilet Gus Johnson is a prominent voice in college football, college basketball, NBA and NFL coverage. But during a recent appearance on Richard Deitsch’s Sports Media podcast, the 54-year-old play-by-play announcer said he won’t be able to do his typical NFL spot coverage for Fox Sports in 2022. Johnson is going back to school as part of Harvard’s Advanced Leadership Initiative. “I don’t think I’m going to be able to do the NFL this year, Rich, because I went back to school. I’m back in college now. And my classes are on Mondays, Wednesdays, and Thursdays. So I’m probably going to ne…