Depreciate Metrics CI workflows
Currently the master branch of CORE-V-VERIF has a set of Metrics-CI workflows that are no longer used. This PR removes them.
@silabs-robin
, I have asked you to review based on the discussion with @eroom1966
on MatterMost (link).
@cathales
, I have asked you to review as one of these workflows was written by you. I believe it is no longer used, but would like your input before removing it.