fix: 去掉 @babel/polyfill 因为 @vue/cli-service 已经处理过 polyfill，具体请看vue-cl…

…i 官方文档 https://cli.vuejs.org/zh/guide/browser-compatibility.html\#browserslist

package.json

@@ -18,7 +18,6 @@
     "printWidth": 100
   },
   "dependencies": {
-    "@babel/polyfill": "^7.12.1",
     "@chenfengyuan/vue-qrcode": "1.0.2",
     "@download/blockies": "1.0.3",
     "@riophae/vue-treeselect": "0.0.38",

src/main.ts

@@ -1,5 +1,3 @@
-import '@babel/polyfill';
-
 import Vue from 'vue';
 import App from './App.vue';
 import router from './router/router';