added method RemovePointCloudLayer
added method RemovePointCloudLayer

OpenWebGlobe/WebViewer,OpenWebGlobe/WebViewer,OpenWebGlobe/WebViewer,Hvitnov/WebViewer,Hvitnov/WebViewer,robhawkes/WebViewer,Hvitnov/WebViewer,robhawkes/WebViewer,OpenWebGlobe/WebViewer,robhawkes/WebViewer,Hvitnov/WebViewer,robhawkes/WebViewer