Delete sky-element framework

sky/tests/resources/test-element.sky

-<!--
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
--->
-<import src="/sky/framework/elements/sky-checkbox.sky" />
-<import src="/sky/framework/elements/sky-element/sky-element.sky" as="SkyElement" />
-
-<sky-element
-    name="test-element"
-    attributes="size:number, checked:boolean,name:string"
-    on-host-event="handleEvent">
-<template>
-  <div id="inside" on-test-event="handleEvent" lang="{{ value }}">{{ value }}</div>
-  <sky-checkbox id="checkbox" checked="{{ checked }}" />
-</template>
-<script>
-module.exports = class extends SkyElement {
-  created() {
-    this.lastEvent = null;
-    this.value = 10;
-    this.shadowRootReadyCount = 0;
-    this.changes = [];
-  }
-  handleEvent(event) {
-    this.lastEvent = event;
-  }
-  shadowRootReady() {
-    this.shadowRootReadyCount++;
-  }
-  sizeChanged(oldValue, newValue) {
-    this.recordAttributeChange('size', oldValue, newValue);
-  }
-  checkedChanged(oldValue, newValue) {
-    this.recordAttributeChange('checked', oldValue, newValue);
-  }
-  nameChanged(oldValue, newValue) {
-    this.recordAttributeChange('name', oldValue, newValue);
-  }
-  recordAttributeChange(name, oldValue, newValue) {
-    this.changes.push({
-      name: name,
-      newValue: newValue,
-      oldValue: oldValue,
-    });
-  }
-}.register();
-</script>
-</sky-element>