mode_handler.off is never used, lets drop it
mode_handler.off is never used, lets drop it

mapbox/gl-draw,drewbo/mapbox-gl-draw,kiRach/mapbox-gl-draw,drewbo/mapbox-gl-draw,mapbox/mapbox-gl-draw,kiRach/mapbox-gl-draw,mapbox/mapbox-gl-draw,mapbox/gl-draw