SINGAPORE – A report of white smoke coming from a landing Singapore Airlines plane forced a runway at Japan’s Narita Airport to close temporarily on Monday, officials said, though responders found no signs of fire and no one was injured.The smoke prompted six fire engines and two ambulances to rush to the scene, and Narita’s runway B was closed from around 7:40am, shortly after the flight landed at the gateway to Tokyo, airport and fire officials said.”We received a report of white smoke rising from the left engine,” a Narita city fire official told AFP.But there was no sign of fire and no…