acp: Remove ACP v0 (#36785)

We had a few people confused about why some features weren't working due
to the fallback logic.

It's gone.

Release Notes:

- N/A
5da31fdb72Conrad Irwin committed on 8/23/2025, 4:09:08 AM· committed by GitHubparentf48a8f2
5 files changedLine totals unavailable