Cleanup test logs.

[jcblw]

Introducing React 16.9 and removing some logging mocks brought some verbose logs to tests.

console.error node_modules/react-test-renderer/cjs/react-test-renderer.development.js:102
      Warning: An update to SubscriptionProvider inside a test was not wrapped in act(...).
      
      When testing, code that causes React state updates should be wrapped into act(...):
      
      act(() => {
        /* fire events that update state */
      });
      /* assert on the output */
      
      This ensures that you're testing the behavior the user would see in the browser. Learn more at https://fb.me/react-wrap-tests-with-act