The New England Senior Hockey League, the oldest and largest adult amateur league in the area, is dead. Cause of death: poor management. On Tuesday, owner Paul Laubenstein shuttered the league, which he began in 1982 and had grown to more than 300 teams. He did that the same day he declared bankruptcy in a Central Florida court. He had more than $1 million in liabilities, according to court documents, and owed $780,000 in ice rentals to 22 area rinks