chore: remove umi config[targets]

config/config.ts

@@ -37,7 +37,6 @@ export default defineConfig({
     baseNavigator: false
   },
   define: { REACT_APP_ENV: REACT_APP_ENV || false },
-  targets: { ie: 11 },
   routes,
   title: false,
   proxy: proxy[REACT_APP_ENV || 'dev'],