Drop the CLA text

Author: hyandell

CONTRIBUTING.md

@@ -57,5 +57,3 @@ If you discover a potential security issue in this project we ask that you notif
 ## Licensing
 
 See the [LICENSE](https://github.com/aws/aws-elastic-beanstalk-cli-setup/blob/master/LICENSE) file for our project's licensing. We will ask you to confirm the licensing of your contribution.
-
-We may ask you to sign a [Contributor License Agreement (CLA)](http://en.wikipedia.org/wiki/Contributor_License_Agreement) for larger changes.