You can uninstall IBM Application Client for WebSphere Application Server for i5/OS product by running commands from your iSeries server.
Use this procedure to uninstall IBM Application Client for WebSphere Application Server for i5/OS, V6.1.
app_client_root/bin/uninstall
Uninstalling IBM Application Client for WebSphere Application Server from the iSeries server removes all the product libraries and directories. If you later decide that you do not need the user-defined data, you can manually remove it.
After completing the procedure, the IBM
Application Client for WebSphere Application Server product is uninstalled.