Remove ol.Map#getRenderer function

src/ol/map.exports

@@ -10,7 +10,6 @@
 @exportProperty ol.Map.prototype.getInteractions
 @exportProperty ol.Map.prototype.getLayers
 @exportProperty ol.Map.prototype.getOverlays
-@exportProperty ol.Map.prototype.getRenderer
 @exportProperty ol.Map.prototype.getViewport
 @exportProperty ol.Map.prototype.removeControl
 @exportProperty ol.Map.prototype.removeInteraction

src/ol/map.js

@@ -503,16 +503,6 @@ ol.Map.prototype.getEventPixel = function(event) {
 };
 
 
-/**
- * Get the map's renderer.
- * @return {ol.renderer.Map} Renderer.
- * @todo stability experimental
- */
-ol.Map.prototype.getRenderer = function() {
-  return this.renderer_;
-};
-
-
 /**
  * Get the target in which this map is rendered.
  * Note that this returns what is entered as an option or in setTarget: