collab: Remove Stripe code (#36275)

This PR removes the code for integrating with Stripe from Collab.

All of these concerns are now handled by Cloud.

Release Notes:

- N/A
239e479aedMarshall Bowers committed on 8/15/2025, 8:49:56 PM· committed by GitHubparent3e0a755
16 files changedLine totals unavailable