Remove duplicate metrics for group "editor"
Problem
The following metrics are duplicates of each other:
usage_activity_by_stage_monthly.create.action_monthly_active_users_wiki_repo
redis_hll_counters.source_code.wiki_action_monthly
This leads to superfluous code and can lead to confusion around the SSOT for this metric
Proposed Solution
We remove action_monthly_active_users_wiki_repo
in favor of wiki_action_monthly
since the redis_hll_counters
namespace is the more common one within Service Ping.
All approvals have been given see: #391729 (comment 1285350524) and dashboards refactored: https://gitlab.com/gitlab-data/analytics/-/issues/15745
Doc for removing metric: https://docs.gitlab.com/ee/development/service_ping/metrics_lifecycle.html#remove-a-metric
Edited by Sebastian Rehm