Merge branch '39958-updatemergerequestsworker-are-failing-on-metric-tagging' into 'master'
Revert "add metrics tagging to the sidekiq middleware"
Closes #39958
See merge request gitlab-org/gitlab-ce!15285
(cherry picked from commit 43d98cd1)
7fd3ce41 Revert "add metrics tagging to the sidekiq middleware"