Revert "Migrate pending ci_templated redis_hll metrics"

What does this MR do and why?

This reverts !96120 (merged) because it broke FOSS master: #372148 (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.

Related to #368996 (closed)