update sticky-section.uvue 去掉多余测试代码

pages/component/sticky-section/sticky-section.uvue

 <template>
   <page-head title="sticky-section"></page-head>
-  <button style="position: fixed; width: 50px; height: 50px;" @click="listViewScrollByY(1000)">测试</button>
   <list-view id="list-view" ref="list-view" show-scrollbar=false class="page" :scroll-into-view="scrollIntoView"
   @scroll="onScroll" @scrollend="onScrollEnd" rebound="false">
     <list-item style="padding: 10px; margin: 5px 0;align-items: center;" :type = 20>