Remove drushcommands link in readme.

Author: weitzman

README.md

@@ -11,7 +11,6 @@ Resources
 * [Installing (and Upgrading)](http://docs.drush.org/en/master/install/)
 * [General Documentation](http://docs.drush.org)
 * [API Documentation](http://www.drush.org/api/master/index.html)
-* [Drush Commands](http://drushcommands.com)
 * [Drush packages available via Composer](https://packagist.org/search/?type=drupal-drush)
 * [A list of modules that include Drush integration](https://www.drupal.org/project/project_module?f[2]=im_vid_3%3A4654&solrsort=ds_project_latest_release+desc)
 * Drush comes with a [full test suite](https://github.com/drush-ops/drush/blob/master/tests/README.md) powered by [PHPUnit](https://github.com/sebastianbergmann/phpunit). Each commit gets tested by our CI bots.