Non so se ho ben capito il tuo problema (sarà l'età) ma dovresti riuscire a rimuoverlo con questo
Download and install the uninstall for Software Manager:
1. Download the Update Manager uninstaller and save it to your Desktop.
2. Double click SoftwareManagerUninstall.exe and follow the instructions to uninstall the Software Manager.
Note: The SoftwareManagerUninstall.exe only removes entries from the Windows registry which are responsible for starting the common software manager after a reboot. No file are actually removed.
Pagina di riferimento.