Remove deprecated metric status from documentation

doc/development/service_ping/metrics_lifecycle.md

@@ -55,23 +55,24 @@ The correct approach is to add a new metric for GitLab 12.6 release with updated
 
 and update existing business analysis artefacts to use `example_metric_without_archived` instead of `example_metric`
 
-## Deprecate a metric
+## Remove a metric
+
+WARNING:
+If a metric is not used in Sisense or any other system after 6 months, the
+Product Intelligence team marks it as inactive and assigns it to the group owner for review.
+
+We are working on automating this process. See [this issue](https://gitlab.com/gitlab-org/gitlab/-/issues/338466) for details.
 
-If a metric is obsolete and you no longer use it, you can mark it as deprecated.
+Product Intelligence removes metrics from Service Ping if they are not used in any Sisense dashboard.
 
-For an example of the metric deprecation process take a look at this [example merge request](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/59899)
+For an example of the metric removal process, see this [example issue](https://gitlab.com/gitlab-org/gitlab/-/issues/297029).
 
-To deprecate a metric:
+To remove a metric:
 
 1. Check the following YAML files and verify the metric is not used in an aggregate:
    - [`config/metrics/aggregates/*.yaml`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/metrics/aggregates/)
    - [`ee/config/metrics/aggregates/*.yaml`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/ee/config/metrics/aggregates/)
 
-1. Create an issue in the [GitLab Data Team
-   project](https://gitlab.com/gitlab-data/analytics/-/issues). Ask for
-   confirmation that the metric is not used by other teams, or in any of the SiSense
-   dashboards.
-
 1. Verify the metric is not used to calculate the conversational index. The
    conversational index is a measure that reports back to self-managed instances
    to inform administrators of the progress of DevOps adoption for the instance.
@@ -81,70 +82,6 @@ To deprecate a metric:
    to view the metrics that are used. The metrics are represented
    as the keys that are passed as a field argument into the `get_value` method.
 
-1. Document the deprecation in the metric's YAML definition. Set
-   the `status:` attribute to `deprecated`, for example:
-
-   ```yaml
-   ---
-   key_path: analytics_unique_visits.analytics_unique_visits_for_any_target_monthly
-   description: Visits to any of the pages listed above per month
-   product_section: dev
-   product_stage: manage
-   product_group: group::analytics
-   product_category:
-   value_type: number
-   status: deprecated
-   time_frame: 28d
-   data_source:
-   distribution:
-   - ce
-   tier:
-   - free
-   ```
-
-1. Replace the metric's instrumentation with a fixed value. This avoids wasting
-   resources to calculate the deprecated metric. In
-   [`lib/gitlab/usage_data.rb`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/usage_data.rb)
-   or
-   [`ee/lib/ee/gitlab/usage_data.rb`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/ee/lib/ee/gitlab/usage_data.rb),
-   replace the code that calculates the metric's value with a fixed value that
-   indicates it's deprecated:
-
-   ```ruby
-   module Gitlab
-     class UsageData
-       DEPRECATED_VALUE = -1000
-
-       def analytics_unique_visits_data
-         results['analytics_unique_visits_for_any_target'] = redis_usage_data { unique_visit_service.unique_visits_for(targets: :analytics) }
-         results['analytics_unique_visits_for_any_target_monthly'] = DEPRECATED_VALUE
-
-         { analytics_unique_visits: results }
-       end
-     # ...
-     end
-   end
-   ```
-
-## Remove a metric
-
-### Removal policy
-
-WARNING:
-A metric that is not used in Sisense or any other system after 6 months is marked by the
-Product Intelligence team as inactive and is assigned to the group owner for review.
-
-We are working on automating this process. See [this issue](https://gitlab.com/gitlab-org/gitlab/-/issues/338466) for details.
-
-Metrics can be removed from Service Ping if they:
-
-- Were previously [deprecated](#deprecate-a-metric).
-- Are not used in any Sisense dashboard.
-
-For an example of the metric removal process take a look at this [example issue](https://gitlab.com/gitlab-org/gitlab/-/issues/297029)
-
-### To remove a deprecated metric
-
 1. Verify that removing the metric from the Service Ping payload does not cause
    errors in [Version App](https://gitlab.com/gitlab-services/version-gitlab-com)
    when the updated payload is collected and processed. Version App collects
@@ -159,9 +96,6 @@ For an example of the metric removal process take a look at this [example issue]
    Ask for confirmation that the metric is not referred to in any SiSense dashboards and
    can be safely removed from Service Ping. Use this
    [example issue](https://gitlab.com/gitlab-data/analytics/-/issues/7539) for guidance.
-   This step can be skipped if verification done during [deprecation process](#deprecate-a-metric)
-   reported that metric is not required by any data transformation in Snowflake data warehouse nor it is
-   used by any of SiSense dashboards.
 
 1. After you verify the metric can be safely removed,
    update the attributes of the metric's YAML definition: