message: Update TutorialReactNative.md
  Removes redundant `import react-native`
diff: @@ -82,11 +82,9 @@ the component and capture the rendered output and create a snapshot file:
  ```javascript
  // __tests__/Intro-test.js
  -import 'react-native';
  import React from 'react';
  import Intro from '../Intro';
  -// Note: test renderer must be required after react-native.
  import renderer from 'react-test-renderer';
  test('renders correctly', () => {
  @@ -250,17 +248,6 @@ real device and then modeling a manual mock after the real module.
  If you end up mocking the same modules over and over it is recommended to define
  these mocks in a separate file and add it to the list of `setupFiles`.
  -### require react-native before the test renderer
  -
  -Currently it is required to require react-native before loading the test
  -renderer:
  -
  -```js
  -import 'react-native';
  -// Require after react-native
  -import renderer from 'react-test-renderer';
  -```
  -
  ### `@providesModule`
  If you'd like to use Facebook's `@providesModule` module system through an npm
  