The following procedure will remove the <oXygen/> plugin from your system. It will not remove the Eclipse platform. If you wish to uninstall Eclipse please see its uninstall instructions.
Procedure 2.4. Uninstall Procedure
Choose the menu option: Help / Software Update / Manage Configuration and from the list of products select <oXygen/> XML Editor and XSLT Debugger.
From the right section of the displayed window choose Uninstall and accept the Eclipse restart after the uninstall procedure is complete.