don't demonstrate /graphql path

Author: acao

README.md

@@ -224,8 +224,6 @@ export default {
 
 ##### With [`Netlify Functions`](https://docs.netlify.com/functions/overview/)
 
-in `<functionsDirectory>/graphql.mjs`
-
 ```js
 import { createHandler } from 'graphql-http/lib/use/@netlify/functions'; // yarn add @netlify/functions
 import { schema } from './previous-step';