removed mousedown event listener on connection destructor
removed mousedown event listener on connection destructor

saikiran7949/MakerNode,JulianVolodia/MakerNode,IntelOpenDesign/MakerNode,IntelOpenDesign/MakerNode,saikiran7949/MakerNode,JulianVolodia/MakerNode,JulianVolodia/MakerNode,saikiran7949/MakerNode