README: Remove section on building jQuery UI

Author: scottgonzalez

README.md

@@ -28,18 +28,3 @@ For more information, see the [contributing page](CONTRIBUTING.md).
 Run the unit tests manually with appropriate browsers and any local web server. See our [environment setup](CONTRIBUTING.md#environment-minimum-required) and [information on running tests](CONTRIBUTING.md#running-the-tests).
 
 You can also run the unit tests inside phantomjs by [setting up your environment](CONTRIBUTING.md#user-content-environment-recommended-setup).
-
-## Building jQuery UI
-
-jQuery UI uses the [Grunt](http://gruntjs.com/) build system.
-
-To build jQuery UI, [set up your environment](CONTRIBUTING.md#environment-minimum-required) and then run the following commands:
-
-```sh
-# Run the concat task to concatenate files
-grunt concat
-
-# There are many other tasks that can be run through Grunt.
-# For a list of all tasks:
-grunt --help
-```