SEATTLE (AP).- The dilapidated factory that helped make Seattle a high-tech town is being demolished after 75 years, a casualty of time, technology and tails that grew too tall. Boeing Co.’s Plant 2, a sprawling but long outdated building between Boeing Field and south Seattle’s Duwamish River, gave birth to some of the world’s most significant aircraft. It was the site of Seattle’s biggest disappearing act and a home to “Rosie the Riveter,” women who built thousands of World War II planes. It’s also where the mostly unskilled workers of a fish-and-timber town first learned the art of assembling aluminum, engines and electronics into sophisticated flying machines. As the danger of global conflict grew, Boeing opened the factory in 1936 to build the prototype for the B-17 Flying Fortress. Eventually