Remove use of goog.dispose()

src/ol/renderer/canvas/canvasvectorlayerrenderer.js

@@ -257,8 +257,6 @@ ol.renderer.canvas.VectorLayer.prototype.prepareFrame = function(frameState, lay
     return true;
   }
 
-  // FIXME dispose of old replayGroup in post render
-  goog.dispose(this.replayGroup_);
   this.replayGroup_ = null;
 
   this.dirty_ = false;

src/ol/renderer/canvas/canvasvectortilelayerrenderer.js

@@ -216,8 +216,6 @@ ol.renderer.canvas.VectorTileLayer.prototype.createReplayGroup = function(tile,
     return;
   }
 
-  // FIXME dispose of old replayGroup in post render
-  goog.dispose(replayState.replayGroup);
   replayState.replayGroup = null;
   replayState.dirty = false;