title: removing plugin in Grails
body: <p>I had <code>grails 1.3.7</code>, and I upgrade to <code>grails 2.1.0</code>, but when I ran <code>grails run-app</code> I got the following error:</p>
  
  <pre><code>      http://repo.grails.org/grails/core/org/grails/plugins/yui/[revision]/yui-[revision].zip
          ::::::::::::::::::::::::::::::::::::::::::::::
          ::          UNRESOLVED DEPENDENCIES         ::
          ::::::::::::::::::::::::::::::::::::::::::::::
          :: org.grails.plugins#yui;[2.6.0,): not found
          ::::::::::::::::::::::::::::::::::::::::::::::
  
  | Error Failed to resolve dependencies (Set log level to 'warn' in BuildConfig.groovy for more information):
  </code></pre>
  
  <p>I tried to <code>grails install-plugin yui</code> and <code>grails uninstall-plugin yui</code>, but neither of them worked. I don't really need the <code>yui</code> plugin, but any solution will be acceptable. How can i solve that problem?</p>