Download unified testclient installer(used: qt-unified-testclient-linux-x64-2.0.2-1-online_2015-08-13_12-24-18-140.run).
Launch the installer, enter community license or expired license and select 'deselect all' on the installer.
After finishing the installer, start the maintenance tool (for uninstallation).
Corrupted installation note appears (please see the screen capture). If the OK button is pressed, uninstallation can be done normally. Command line output :