Mapabcmap-删除map下的某个点

	//删除地图上的某个点
        //equimentId,engineerId------>是某个点的ID
	function removeEuipment(equimentId,engineerId){
		if(equimentId != null)
			mapObj.removeOverlayById(equimentId);
		if(engineerId != null)
			mapObj.removeOverlayById(engineerId);
	}