Elvis Presley, Patsy Cline and Hank Williams played there. The Von Erich family wrestled there. But now, the only action seen at the Dallas Sportatorium comes from the crews who are taking apart the historic wrestling, boxing and concert venue. After a few recent reprieves, the barnlike wood-and-metal arena is coming down. The city of Dallas granted a demolition permit last week for the building at Cadiz and Industrial on the southwest corner of downtown Dallas.