Remove unused worker

examples/worker.html

@@ -1,11 +0,0 @@
----
-layout: example.html
-title: Worker
-shortdesc: This example should be deleted.
-docs: >
-  When you move the map, a message is sent to a worker.  In response, the worker sends a
-  message back with the version identifier.
-tags: "worker"
-experimental: true
----
-<div id="map" class="map"></div>

examples/worker.js

@@ -1,34 +0,0 @@
-/* eslint-disable no-console */
-
-import Map from '../src/ol/Map.js';
-import OSM from '../src/ol/source/OSM.js';
-import TileLayer from '../src/ol/layer/Tile.js';
-import View from '../src/ol/View.js';
-import {create as createVersionWorker} from '../src/ol/worker/version.js';
-
-const map = new Map({
-  layers: [
-    new TileLayer({
-      source: new OSM(),
-    }),
-  ],
-  target: 'map',
-  view: new View({
-    center: [0, 0],
-    zoom: 2,
-  }),
-});
-
-const worker = createVersionWorker();
-worker.addEventListener('error', function (error) {
-  console.error('worker error', error);
-});
-
-worker.addEventListener('message', function (event) {
-  console.log('message from worker:', event.data);
-});
-
-map.on('moveend', function (event) {
-  const state = event.frameState.viewState;
-  worker.postMessage({zoom: state.zoom, center: state.center});
-});