Delete unused file

.webpackrc.js

-const path = require('path');
-
-export default {
-  entry: 'src/index.js',
-  extraBabelPlugins: [['import', { libraryName: 'antd', libraryDirectory: 'es', style: true }]],
-  env: {
-    development: {
-      extraBabelPlugins: ['dva-hmr'],
-    },
-  },
-  externals: {
-    '@antv/data-set': 'DataSet',
-  },
-  alias: {
-    components: path.resolve(__dirname, 'src/components/'),
-  },
-  ignoreMomentLocale: true,
-  theme: './src/theme.js',
-  html: {
-    template: './src/index.ejs',
-  },
-  lessLoaderOptions: {
-    javascriptEnabled: true,
-  },
-  disableDynamicImport: true,
-  publicPath: '/',
-  hash: true,
-};