H. David Burton, longtime presiding bishop of the LDS Church and the genial public face of the faith’s decadelong effort to build a mammoth urban community of residences, offices and shops in downtown Salt Lake City, was released Saturday from the ecclesiastical post he has held since 1996. The announcement — by Dieter F. Uchtdorf, second counselor in the faith’s governing First Presidency, during the 182nd Annual General Conference — came just nine days after the church and Taubman Centers Inc. opened the retail component of City Creek Center, across the street from Temple Square and LDS Church headquarters.