Las Vegas has said goodbye to one of its last mob-era landmarks, with the Tropicana, the third oldest casino on the Las Vegas Strip, reduced to rubble in a 22-second implosion. The towers crumbled in a celebration complete with fireworks, marking the city’s first major demolition in nearly a decade. Las Vegas has a history of turning demolitions into spectacles, according to Geoff Schumacher, historian and vice president at the Mob Museum. This time, the implosion cleared the way for a $1.5 billion baseball stadium, part of Las Vegas’ new role as a sports hub. With the Tropicana gone, only…