Use inherited dispatchChangeEvent in ol.layer.Base

src/ol/layer/layerbase.js

@@ -3,7 +3,6 @@ goog.provide('ol.layer.LayerProperty');
 goog.provide('ol.layer.LayerState');
 
 goog.require('goog.events');
-goog.require('goog.events.EventType');
 goog.require('goog.math');
 goog.require('goog.object');
 goog.require('ol.Object');
@@ -75,14 +74,6 @@ ol.layer.Base = function(options) {
 goog.inherits(ol.layer.Base, ol.Object);
 
 
-/**
- * @protected
- */
-ol.layer.Base.prototype.dispatchChangeEvent = function() {
-  this.dispatchEvent(goog.events.EventType.CHANGE);
-};
-
-
 /**
  * @return {number|undefined} Brightness.
  */