collab: Remove unneeded caching of Stripe price IDs by meter ID (#34915)
This PR removes the caching of Stripe price IDs by meter ID on the
`StripeBilling` object, as we weren't actually reading them anywhere.
Release Notes:
- N/A
9e280d0905Marshall Bowers committed on 7/22/2025, 5:42:07 PM· committed by GitHubparentd81a817