message: Remove heroku-cli-util usage
  This single remaining use of the `heroku-cli-util` package to mock
  `console` functions is leading to our Node 12 tests being flaky.
  I really don't see why this is needed, so I'm killing it.
diff: -// this is because of herkou-cli-utils hacky mocking system on their console logger
  -import { stdout, mockConsole } from "heroku-cli-util";
  import path from "path";
  import fs from "fs";
  -import { test as setup } from "apollo-cli-test";
  +import { test } from "apollo-cli-test";
  import {
  getIntrospectionQuery,
  print,
  @@ -12,8 +10,6 @@ import {
  } from "graphql";
  import gql from "graphql-tag";
  -const test = setup.do(() => mockConsole());
  -
  // helper function to resolve files from the actual filesystem
  const resolveFiles = opts => {
  let files = {};
  