Choose the menu option: Help / Software Update / Manage Configuration and
from the list of products select
<oXygen/> XML Author and XSLT Debugger.
Select Disable
Accept the restart of the Eclipse IDE.
Again choose the menu option: Help / Software Update / Manage
Configuration and from the list of products select
<oXygen/> XML Author.
Enable Show Disabled Features from the dialog
toolbar.
From the right section of the displayed window choose
Uninstall.
After the uninstall procedure is complete accept the Eclipse
restart.
If you wish to completely remove the application directory and any work
saved in it, you will have to delete this directory manually. To remove the
application configuration and any personal customizations delete the %APPDATA%\com.oxygenxml.author directory on Windows
(usually %APPDATA% has the value [user-home-dir]\Application Data) /
.com.oxygenxml.author on Linux from the user home
directory.