collab: Remove unneeded caching of Stripe meters (#34900)

This PR removes the caching of Stripe meters on the `StripeBilling`
object, as we weren't actually reading them anywhere.

Release Notes:

- N/A
939f9fffa3Marshall Bowers committed on 7/22/2025, 3:27:58 PM· committed by GitHubparent230061a
1 file changedLine totals unavailable