Modify the contributing steps

Author: tvalentius

CONTRIBUTING.md

@@ -14,9 +14,7 @@ We actively welcome your pull requests.
 
 1. Fork the repo and create your branch from `master`.
 2. If you've added code that should be tested, add tests.
-3. If you've changed APIs, update the documentation.
-4. Ensure the test suite passes.
-5. If you haven't already, complete the Contributor License Agreement ("CLA").
+3. If you haven't already, complete the Contributor License Agreement ("CLA").
 
 ## Contributor License Agreement ("CLA")
 In order to accept your pull request, we need you to submit a CLA. You only need
@@ -37,4 +35,4 @@ Please follow [The Flow Standard](https://github.com/Flet/semistandard)
 
 ## License
 By contributing to Facebook Developer Circles Community Content, you agree that your contributions will be licensed
-under the LICENSE file in the root directory of this source tree.
+under the LICENSE file in the root directory of this source tree.