Remove unused handleLayerVisibleChange

src/ol/layer/layerbase.js

@@ -235,16 +235,6 @@ goog.exportProperty(
     ol.layer.Base.prototype.getVisible);
 
 
-/**
- * @protected
- */
-ol.layer.Base.prototype.handleLayerVisibleChange = function() {
-  if (this.getSourceState() == ol.source.State.READY) {
-    this.dispatchChangeEvent();
-  }
-};
-
-
 /**
  * Adjust the layer brightness.  A value of -1 will render the layer completely
  * black.  A value of 0 will leave the brightness unchanged.  A value of 1 will

src/ol/layer/layergroup.js

@@ -79,14 +79,6 @@ ol.layer.Group.prototype.handleLayerChange_ = function() {
 };
 
 
-/**
- * @inheritDoc
- */
-ol.layer.Group.prototype.handleLayerVisibleChange = function() {
-  this.dispatchChangeEvent();
-};
-
-
 /**
  * @param {goog.events.Event} event Event.
  * @private