google_ai: Remove list of supported countries (#29348)

This PR removes the list of supported countries from the `google_ai`
crate, as it is no longer referenced in this repo.

Release Notes:

- N/A
f527df6fa1Marshall Bowers committed on 4/24/2025, 3:04:45 PM· committed by GitHubparentb54bbeb
2 files changedLine totals unavailable