Hide midpoints when drawing (no snapping)

css/map.css

@@ -117,6 +117,14 @@ g.vertex.selected .shadow {
 
 /* midpoints */
 
+.mode-draw-area g.midpoint,
+.mode-draw-line g.midpoint,
+.mode-add-area g.midpoint,
+.mode-add-line g.midpoint,
+.mode-add-point g.midpoint {
+  display: none;
+}
+
 g.midpoint .fill {
     fill:#aaa;
 }

js/id/behavior/draw_way.js

@@ -28,7 +28,7 @@ iD.behavior.DrawWay = function(context, wayId, index, mode, baseGraph) {
     function move(datum) {
         var loc = context.map().mouseCoordinates();
 
-        if (datum.type === 'node' || datum.type === 'midpoint') {
+        if (datum.type === 'node') {
             loc = datum.loc;
         } else if (datum.type === 'way') {
             loc = iD.geo.chooseIndex(datum, d3.mouse(context.surface().node()), context).loc;