Use `import` instead of `= require(...)` again

app/javascript/packs/frontend/components/relay_component.tsx

@@ -1,6 +1,5 @@
 import React from 'react';
-//import {graphql, QueryRenderer} from 'react-relay';
-const {graphql, QueryRenderer} = require('react-relay');
+import {graphql, QueryRenderer} from 'react-relay';
 import {Link} from 'react-router-dom';
 
 import environment from '../graphqlEnvironment';