If you want to uninstall the WebSphere Portal for Test Environment, you will have to use the Portal Toolkit uninstaller.
Run the following command.
cd WS_Installdir/PortalToolkit/_uninst ./uninstall.binwhere WS_Installdir is the directory that you installed WebSphere Studio.
To uninstall Portal Toolkit, you can use the Portal Toolkit uninstaller. Carry out the same steps above except select Portal Toolkit V5.0.2.3.