Gatsby + Apollo + Styled Components SSR

gatsby-ssr.js

import React from "react";
import { renderToString } from "react-dom/server";
import ApolloClient, { createNetworkInterface } from "apollo-client";
import { ApolloProvider, getDataFromTree } from "react-apollo";
import { ServerStyleSheet, StyleSheetManager } from "styled-components";

// function to generate hydrated state for client side Apollo
function makeApolloState(ssrClient) {
  const state = { apollo: ssrClient.getInitialState() }
  // appends apollo state to the global client window object
  return (
    <script
      dangerouslySetInnerHTML={{
        __html: `window.__APOLLO_STATE__=${JSON.stringify(state).replace(
          /</g,
          `\\u003c`
        )};`
      }}
    />
  );
}

// Apollo Setup
const networkInterface = createNetworkInterface({
  uri: process.env.GRAPHCOOL_API
});

// Apollo client in server side rendering mode
const client = new ApolloClient({
  ssrMode: true,
  networkInterface,
  dataIdFromObject: o => o.id
});

exports.replaceRenderer = ({
  bodyComponent,
  replaceBodyHTMLString,
  setHeadComponents
}) =>
  new Promise((resolve) => {
    // bodyComponent is the entire React component tree for the page
    /*
      to remove styled components:
      1. remove const sheet
      2. remove StyleSheetManager
      3. remove sheet.getStyleElement from setHeadComponents array
    */
    const sheet = new ServerStyleSheet()
    const ApolloQueries = (
      <ApolloProvider client={client}>
        <StyleSheetManager sheet={sheet.instance}>
          {bodyComponent}
        </StyleSheetManager>
      </ApolloProvider>
    );
    // getDataFromTree walks ApolloQueries tree for all Apollo GQL queries
    // It runs the queries and mutates client object
    getDataFromTree(ApolloQueries).then(() => {
      // renders ApolloQueries to string and then inserts it into the page
      replaceBodyHTMLString(renderToString(ApolloQueries))
      // sets head components with styled components and apollo state
      setHeadComponents([sheet.getStyleElement(), makeApolloState(client)])
      resolve();
    })
  })

Hey i dont want to use the process.env.GRAPHCOOL_API
can i remove it or modify?