Sweeping !31654 from 21.3 to master. Fix Unused class rule warning in MuonSimEvent (ATLASSIM-4476) (!31732) · Merge requests · atlas / athena · GitLab

Atlas Nightlybuild requested to merge cherry-pick-bc27550a3f-master into master Apr 03, 2020

Fix Unused class rule warning in MuonSimEvent (ATLASSIM-4476)

See merge request !31654 (merged)