delete more externals

.webpackrc.js

@@ -16,11 +16,6 @@ export default {
   alias: {
     components: path.resolve(__dirname, 'src/components/'),
   },
-  externals: {
-    '@antv/data-set': 'DataSet',
-    bizcharts: 'BizCharts',
-    rollbar: 'rollbar',
-  },
   ignoreMomentLocale: true,
   theme: './src/theme.js',
   html: {