How will we handle topology puma vs unicorn tracking

The following discussion from !62107 (merged) should be addressed:

• @mkaeppler started a discussion:

  I'm wondering how our dashboards will reflect this now. I guess we assume that users on 14+ never run Unicorn? Cause we may want to track this distribution for a while longer.

  If we intend to remove this tracking, do we have an issue for this already? It doesn't make sense to track (and test) the Puma vs Unicorn split if there is only Puma going forward.