title: rpm un-installs with warning unlink messages
body: <p>I have created a spec file which can install/upgrade/uninstall a package .But , on uninstallation , it uninstalls the package with warnings </p>
  
  <pre><code>warning:    erase unlink of /var/hudson/master/plugins/publish-over-cifs/help/global/username.html failed: No such file or directory
  warning:    erase unlink of /var/hudson/master/plugins/publish-over-cifs/help/global/timeOut.html failed: No such file or directory
  warning:    erase unlink of /var/hudson/master/plugins/publish-over-cifs/help/global/remoteRootDir.html failed: No such file or directory
  warning:    erase unlink of /var/hudson/master/plugins/publish-over-cifs/help/global/port.html failed: No such file or directory
  warning:    erase unlink of /var/hudson/master/plugins/publish-over-cifs/help/global/password.html failed: No such file or directory
  </code></pre>
  
  <p>How can i resolve this error ? Is there any way to ignore such warning in spec file ?</p>