Delete driver archive after extraction

[adam1x]

When the user has set Minimal install to true and selects "Download (+ Extract)": the archive is no longer needed after a successful extraction and can thus be deleted.

In the case where the user selects "Download + Install":

• if Minimal install is set to true, the archive will be removed before the installer is run, and DownloadDriverQuiet() will clean up the extracted installer separately in the end.
• if Minimal install is set to false, MakeInstaller() won't be called, so this commit has no effect.