André Gregory, at left, who plays himself, the sophisticated title character in “My Dinner with André,” and his co-star and co-author, the more down-to-earth Wallace Shawn, donned ski wear under their clothing to stay warm during the Richmond filming in December 1980. Recently while heading east on Monument Avenue, past scarred granite stubs at four intersections, I remember the Confederate imagery that once crowned those plinths. Then, passing the Jefferson Hotel I wonder: Do hotel visitors still ask about another icon, the lobby’s red-carpeted staircase where Scarlett O’Hara never fell? Probably not. “Gone With the Wind” is now relegated to the backlot, joining “The Birth of a Nation” as one of Tinseltown’s outdated missteps.