Remove less support

.babelrc

@@ -1,11 +1,3 @@
 {
-  "presets": ["next/babel"],
-  "plugins": [
-    [
-      "import", {
-        "libraryName": "antd",
-        "style": true
-      }
-    ]
-  ]
+  "presets": ["next/babel"]
 }

components/Footer.js

@@ -1,4 +1,3 @@
-import Link from 'next/link'
 import { withRouter } from 'next/router'
 
 const Footer = () => (

next.config.js

@@ -1,22 +1,11 @@
-const withLess = require('@zeit/next-less')
-const fs = require('fs')
 const path = require('path')
-// const SWPrecacheWebpackPlugin = require('sw-precache-webpack-plugin')
 const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
 
-const theme = require('./theme.json')
-
-// fix: prevents error when .less files are required by node
-if (typeof require !== 'undefined') {
-  require.extensions['.less'] = (file) => {}
-}
-
-module.exports = withLess({
-  // TODO: 移除 less 支持
+module.exports = {
   lessLoaderOptions: {
     javascriptEnabled: true,
   },
-  webpack: (config, { isServer, ...rest }) => {
+  webpack: (config, { isServer }) => {
     // if (!config.dev) {
       // config.plugins.push(
         // new SWPrecacheWebpackPlugin({
@@ -50,4 +39,4 @@ module.exports = withLess({
 
     return config
   }
-})
+}