By DEE-ANN DURBIN, AP Business Writer Airbnb says it is laying off 25% of its workforce as it confronts a steep decline in global travel due to the new coronavirus pandemic. It's a serious setback for the 12-year-old home-sharing company, which just a few months ago was valued at $31 billion and planning a hotly anticipated IPO. Airbnb lists around 7 million properties on its website. In a letter to