One city’s trash is Las Vegas’ treasure. The Oakland Coliseum has been a steaming pile of a ballpark for decades. After numerous skirmishes with the city over Byzantine budgets, funding, public subsidies, and potential sites for a new Oakland-area stadium, the Athletics announced the purchase of 49 acres of land on the Las Vegas Strip. The land, a mile north of Allegiant Stadium — home of the Raiders — will eventually be used to…