refactor: 小优化

packages/core/start.js

@@ -1,22 +0,0 @@
-const DevSidercar = require('.')
-const fs = require('fs')
-// require('json5/lib/register')
-// const config = require('../../config/index.json5')
-// 启动服务
-const mitmproxyPath = './mitmproxy'
-async function startup () {
-  const banner = fs.readFileSync('./banner.txt')
-  console.log(banner.toString())
-  await DevSidercar.api.startup({ mitmproxyPath })
-  console.log('dev-sidecar 已启动')
-}
-
-async function onClose () {
-  console.log('on sigint ')
-  await DevSidercar.api.shutdown()
-  console.log('on closed ')
-  process.exit(0)
-}
-process.on('SIGINT', onClose)
-
-startup()