prometheus, ekg-prometheus-adapter: Remove from broken-packages

- Prometheus and ekg-prometheus-adapter were fixed in PR:
  https://github.com/NixOS/nixpkgs/pull/70956 but I forgot to remove
  them from the list of broken-packages.

pkgs/development/haskell-modules/configuration-hackage2nix.yaml

@@ -4395,7 +4395,6 @@ broken-packages:
   - ekg-elasticsearch
   - ekg-influxdb
   - ekg-log
-  - ekg-prometheus-adapter
   - ekg-push
   - ekg-rrd
   - elevator
@@ -8075,7 +8074,6 @@ broken-packages:
   - projectile
   - prolog-graph
   - prolog-graph-lib
-  - prometheus
   - prometheus-effect
   - promise
   - pronounce