Remove feature flag for sidekiq-monitoring
Remove feature flag for sidekiq-monitoring

www.agileplannerapp.com/boards/173808/cards/5040

This story got accepted on Preview, so no harm in
deploying it further.

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet