Remove query_project_ci_feature_usages_for_coverage flag

This removes the feature flag and completely enables
querying from the new CI feature usages table to determine
which projects have coverages.

Changelog: changed
EE: true

config/feature_flags/development/query_project_ci_feature_usages_for_coverage.yml

----
-name: query_project_ci_feature_usages_for_coverage
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/69890
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/339974
-milestone: '14.3'
-type: development
-group: group::testing
-default_enabled: false

ee/app/finders/ee/namespaces/projects_finder.rb

@@ -39,11 +39,7 @@ module EE
       def with_code_coverage(items)
         return items unless params[:has_code_coverage].present?
 
-        if ::Feature.enabled?(:query_project_ci_feature_usages_for_coverage, namespace, default_enabled: :yaml)
         items.with_coverage_feature_usage(default_branch: true)
-        else
-          items.with_code_coverage
-        end
       end
     end
   end

ee/app/models/ee/project.rb

@@ -122,11 +122,6 @@ module EE
           .limit(limit)
       end
 
-      scope :with_code_coverage, -> do
-        joins(:daily_build_group_report_results).merge(::Ci::DailyBuildGroupReportResult.with_coverage.with_default_branch).group(:id)
-          .allow_cross_joins_across_databases(url: 'https://gitlab.com/gitlab-org/gitlab/-/issues/339974')
-      end
-
       scope :with_coverage_feature_usage, ->(default_branch: nil) do
         join_conditions = { feature: :code_coverage }
         join_conditions[:default_branch] = default_branch unless default_branch.nil?

ee/spec/finders/ee/namespaces/projects_finder_spec.rb

@@ -69,11 +69,6 @@ RSpec.describe Namespaces::ProjectsFinder do
           create(:ci_daily_build_group_report_result, project: project_2, default_branch: false)
         end
 
-        context 'and query_project_ci_feature_usages_for_coverage flag is enabled for the given group' do
-          before do
-            stub_feature_flags(query_project_ci_feature_usages_for_coverage: namespace)
-          end
-
         it 'returns projects with code coverage on default branch based on ci feature usages' do
           record = ActiveRecord::QueryRecorder.new do
             expect(projects).to contain_exactly(project_1)
@@ -85,23 +80,6 @@ RSpec.describe Namespaces::ProjectsFinder do
         end
       end
 
-        context 'and query_project_ci_feature_usages_for_coverage flag is disabled for the given group' do
-          before do
-            stub_feature_flags(query_project_ci_feature_usages_for_coverage: create(:group))
-          end
-
-          it 'returns projects with code coverage on default branch based on daily build group report results' do
-            record = ActiveRecord::QueryRecorder.new do
-              expect(projects).to contain_exactly(project_1)
-            end
-
-            queried_ci_table = record.log.any? {|l| l.include?('ci_daily_build_group_report_results')}
-
-            expect(queried_ci_table).to eq(true)
-          end
-        end
-      end
-
       context 'when has_code_coverage is not provided' do
         it 'returns all projects' do
           expect(projects).to contain_exactly(project_1, project_2)

ee/spec/graphql/ee/resolvers/namespace_projects_resolver_spec.rb

@@ -78,11 +78,6 @@ RSpec.describe Resolvers::NamespaceProjectsResolver do
             create(:ci_daily_build_group_report_result, project: project_2, default_branch: false)
           end
 
-          context 'and query_project_ci_feature_usages_for_coverage flag is enabled for the given group' do
-            before do
-              stub_feature_flags(query_project_ci_feature_usages_for_coverage: group)
-            end
-
           it 'returns projects with code coverage on default branch based on ci feature usages' do
             record = ActiveRecord::QueryRecorder.new do
               expect(projects).to contain_exactly(project_1)
@@ -93,23 +88,6 @@ RSpec.describe Resolvers::NamespaceProjectsResolver do
             expect(queried_ci_table).to eq(false)
           end
         end
-
-          context 'and query_project_ci_feature_usages_for_coverage flag is disabled for the given group' do
-            before do
-              stub_feature_flags(query_project_ci_feature_usages_for_coverage: false)
-            end
-
-            it 'returns projects with code coverage on default branch based on daily build group report results' do
-              record = ActiveRecord::QueryRecorder.new do
-                expect(projects).to contain_exactly(project_1)
-              end
-
-              queried_ci_table = record.log.any? {|l| l.include?('ci_daily_build_group_report_results')}
-
-              expect(queried_ci_table).to eq(true)
-            end
-          end
-        end
       end
     end
   end

ee/spec/models/project_spec.rb

@@ -414,19 +414,6 @@ RSpec.describe Project do
       it { is_expected.to eq([project_2, project_3, project_1]) }
     end
 
-    describe '.with_code_coverage' do
-      let_it_be(:project_1) { create(:project) }
-      let_it_be(:project_2) { create(:project) }
-      let_it_be(:project_3) { create(:project) }
-
-      let!(:coverage_1) { create(:ci_daily_build_group_report_result, project: project_1) }
-      let!(:coverage_2) { create(:ci_daily_build_group_report_result, project: project_2) }
-
-      subject { described_class.with_code_coverage }
-
-      it { is_expected.to contain_exactly(project_1, project_2) }
-    end
-
     describe '.with_coverage_feature_usage' do
       let_it_be(:project_1) { create(:project) }
       let_it_be(:project_2) { create(:project) }