Remove database_sourced_aggregated_metrics FF

Changelog: other
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/62877

config/feature_flags/development/database_sourced_aggregated_metrics.yml

----
-name: database_sourced_aggregated_metrics
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/52784
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/300411
-milestone: '13.9'
-type: development
-group: group::product intelligence
-default_enabled: false

lib/gitlab/usage/metrics/aggregates/aggregate.rb

@@ -62,8 +62,6 @@ module Gitlab
                   data[aggregation[:name]] = calculate_count_for_aggregation(aggregation: aggregation, start_date: start_date, end_date: end_date)
                 end
               when DATABASE_SOURCE
-                next unless Feature.enabled?('database_sourced_aggregated_metrics', default_enabled: false, type: :development)
-
                 data[aggregation[:name]] = calculate_count_for_aggregation(aggregation: aggregation, start_date: start_date, end_date: end_date)
               else
                 Gitlab::ErrorTracking

spec/lib/gitlab/usage/metrics/aggregates/aggregate_spec.rb

@@ -25,34 +25,6 @@ RSpec.describe Gitlab::Usage::Metrics::Aggregates::Aggregate, :clean_gitlab_redi
   end
 
   context 'aggregated_metrics_data' do
-    shared_examples 'db sourced aggregated metrics without database_sourced_aggregated_metrics feature' do
-      before do
-        allow_next_instance_of(described_class) do |instance|
-          allow(instance).to receive(:aggregated_metrics).and_return(aggregated_metrics)
-        end
-      end
-
-      context 'with disabled database_sourced_aggregated_metrics feature flag' do
-        before do
-          stub_feature_flags(database_sourced_aggregated_metrics: false)
-        end
-
-        let(:aggregated_metrics) do
-          [
-            aggregated_metric(name: "gmau_2", source: "database", time_frame: time_frame)
-          ]
-        end
-
-        it 'skips database sourced metrics', :aggregate_failures do
-          results = {}
-          params = { start_date: start_date, end_date: end_date, recorded_at: recorded_at }
-
-          expect(sources::PostgresHll).not_to receive(:calculate_metrics_union).with(params.merge(metric_names: %w[event1 event2 event3]))
-          expect(aggregated_metrics_data).to eq(results)
-        end
-      end
-    end
-
     shared_examples 'aggregated_metrics_data' do
       context 'no aggregated metric is defined' do
         it 'returns empty hash' do
@@ -237,7 +209,6 @@ RSpec.describe Gitlab::Usage::Metrics::Aggregates::Aggregate, :clean_gitlab_redi
       let(:time_frame) { ['all'] }
 
       it_behaves_like 'database_sourced_aggregated_metrics'
-      it_behaves_like 'db sourced aggregated metrics without database_sourced_aggregated_metrics feature'
 
       context 'redis sourced aggregated metrics' do
         let(:aggregated_metrics) { [aggregated_metric(name: 'gmau_1', time_frame: time_frame)] }
@@ -278,7 +249,6 @@ RSpec.describe Gitlab::Usage::Metrics::Aggregates::Aggregate, :clean_gitlab_redi
 
       it_behaves_like 'database_sourced_aggregated_metrics'
       it_behaves_like 'redis_sourced_aggregated_metrics'
-      it_behaves_like 'db sourced aggregated metrics without database_sourced_aggregated_metrics feature'
     end
 
     describe '.aggregated_metrics_monthly_data' do
@@ -289,7 +259,6 @@ RSpec.describe Gitlab::Usage::Metrics::Aggregates::Aggregate, :clean_gitlab_redi
 
       it_behaves_like 'database_sourced_aggregated_metrics'
       it_behaves_like 'redis_sourced_aggregated_metrics'
-      it_behaves_like 'db sourced aggregated metrics without database_sourced_aggregated_metrics feature'
     end
   end
 end