I have some reservations about this. Using Steinberg Library Manager, I see certain content is installed (at least for me) in the download assistant folder. (C:\Users{{USERNAME}}\Downloads\Steinberg\WIN64.…). In particular, The Kit SE, Raw Ambience, Guitar Harmonics.
So, I’d make backups of everything downloaded, and NOT delete content that shows up in these locations according to Steinberg Library Manager.