Deleting previous versions

Hi - complete newbie so please forgive if this question has been aired before (many times?).

I purchased Steinberg UR12 just for the fact it came with Cubase LE AI Elements 10.5

Then I bought the Cubase Pro 10.5 AI upgrade. (The whole point was to find a cheaper way to buy Cubase Pro.)

Once I’d installed Pro 10.5 I was entitled to Pro 11 upgrade. I’ve since installed the upgrade.

So, finally, my question is: can I simply delete the AI Elements installation and the Cubase Pro 10.5 installation, and leave the Pro 11 intact? And if so, should I delete them via Windows Add/Remove Programs feature or is there a built-in Steinberg Library management tool to use?

Yes, you can remove them via Windows. But uninstall just the applications as content can be shared between different versions.