It's automatically installed and bundled with the IDE. You can disable it, but to uninstall fully you have to manually delete files from each and every IDE installation
As mentioned in another comment, you can add a .noai file to the root of your project to disable AI support.
As to deleting files that ship with the app but that aren't used if you disable them... that feels awfully 1980's "gosh disk space is expensive" thinking.
