Tom Tapp Deputy Managing EditorThe Academy of Television Arts & Sciences is suing to block a Beverly Hills auction house from selling Valerie Harper’s four Emmy statuettes because the sale this week would tarnish the award, according to a complaint filed in Los Angeles federal court.The Emmy awards that Harper received for playing Rhoda Morgenstern on The Mary Tyler Moore Show and Rhoda are estimated at $5,000 to $7,000 each on the Julien’s Auctions website, where they are set to be sold Friday