ENDICOTT, N.Y. (WIVT/WBGH)- Work could be starting soon for the long-awaited demolition of what's known as the Old Building Group on the Huron Campus. The Broome County IDA approved tax exemptions for Phoenix Investors, the owners of the property, at its board meeting yesterday. Phoenix plans to tear down the dilapidated IBM buildings at the Northeast corner of the intersection of North Street and McKinley Avenue. The total cost of the demoliti…