remove radix eslint rule (facebook#3844)

Author: sendilkumarn

packages/eslint-config-react-app/index.js

@@ -157,7 +157,6 @@ module.exports = {
     ],
     'no-with': 'warn',
     'no-whitespace-before-property': 'warn',
-    radix: 'warn',
     'require-yield': 'warn',
     'rest-spread-spacing': ['warn', 'never'],
     strict: ['warn', 'never'],