Photograph by wallyg on Flickr Earlier this year, six-floor 600 Broadway, at the corner of Houston, was sold for $71 million. While the Pottery Barn was a reported casualty, there might be another: The huge DKNY painted sign on the side of the building. WWD reports DKNY lost the right to use the wall this month. Clothing retailer Abercrombie & Fitch will be moving into the building with a 40,000 square square foot store......