Revert " 'limit-cc-verification-experiment-to-new-users' into 'master'"

What does this MR do and why?

Revert !78987 (merged)

Broke master #351351 (closed)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.