恢复babel.config的eslink,删除不需要上传的flowconfig (#65)

* react-native升级0.63.2

* 恢复babel的eslink

* flx删除不需要上传的flowconfig

Co-authored-by: [email protected] <[email protected]>

Author: matuancc

babel.config.js

@@ -1,3 +1,5 @@
 module.exports = {
   presets: ['module:metro-react-native-babel-preset'],
+  parser: '@typescript-eslint/parser',
+  plugins: ['@typescript-eslint'],
 };