WTOP is reporting that the the Metropolitan Washington Airports Authority plans to ban taxicabs without meters from taxi stands at Reagan National Airport. That’s good. Regular roundtrips to DCA are the D.C. taxi driver’s bread and butter, and the airport taxi stands have dispatch employees there to assist passengers who are ready and able to enforce the meter rule. But MWAA says it will begin enforcing this rule at National on June 1, one month…