refactor(ActivitiesCover): 移除未使用的taro css导入

清理未使用的'@tarojs/taro/html.css'导入以保持代码简洁

 <!--
  * @Date: 2022-09-19 14:11:06
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-09-04 22:34:52
+ * @LastEditTime: 2025-09-05 21:40:44
  * @FilePath: /lls_program/src/pages/ActivitiesCover/index.vue
  * @Description: 活动海报页面 - 展示活动信息并处理定位授权
 -->
@@ -93,7 +93,6 @@
 </template>
 
 <script setup>
-import '@tarojs/taro/html.css'
 import { ref, onMounted } from "vue"
 import Taro, { useLoad } from '@tarojs/taro'
 import "./index.less"