By Tzvi Machlin After four seasons as a radio play-by-play voice of the Raiders, broadcast legend Brent Musburger is moving on. Musburger took to Twitter on Friday to thank the Raiders for the memories. He said he’ll miss his broadcast partner Lincoln Kennedy and the team’s production crew. “Many thanks to the @Raiders organization for fond memories. I’ll miss broadcast partner Lincoln Kennedy and the radio production crew. What’s next? I hear Mike Trout might step down as commissioner of his fantasy league. You never know!” Raiders fans and even general NFL fans are sad to see Musburger go. A…