title: Uninstall Rails 3 with dependencies?
body: <p>I like that Rails 3 is so easy to install: <code>gem install rails --pre</code>, and all of the dependencies are automatically installed for you. But, what about uninstalling it? If I just do <code>gem uninstall rails</code>, I still have</p>
  
  <pre><code>actionmailer (3.0.0.beta3)
  actionpack (3.0.0.beta3)
  activemodel (3.0.0.beta3)
  activerecord (3.0.0.beta3)
  activeresource (3.0.0.beta3)
  activesupport (3.0.0.beta3)
  </code></pre>
  
  <p>which I want to get rid of. What's the easiest way to do so?</p>