collab: Remove code for embeddings (#29310)

This PR removes the embeddings-related code from collab and the
protocol, as we weren't using it anywhere.

Release Notes:

- N/A
ecc600a68fMarshall Bowers committed on 4/23/2025, 10:27:46 PM· committed by GitHubparent2184967
8 files changedLine totals unavailable