chore: Drop optimize_sql_query_for_security_report feature flag

Drops feature flag introduced to improve performance within the
StoreReportService. This flag was enabled globally previously with
https://gitlab.com/gitlab-org/gitlab/-/issues/323059 and can now be
removed

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/333020

Changelog: performance
EE: true

ee/app/services/security/store_report_service.rb

@@ -35,12 +35,6 @@ module Security
       pipeline.vulnerability_findings.report_type(@report.type).any?
     end
 
-    def optimize_sql_query_for_security_report_enabled?
-      strong_memoize(:optimize_sql_query_for_security_report_enabled) do
-        Feature.enabled?(:optimize_sql_query_for_security_report, project)
-      end
-    end
-
     def create_all_vulnerabilities!
       # Look for existing Findings using UUID
       finding_uuids = @report.findings.map(&:uuid)
@@ -48,18 +42,16 @@ module Security
         .where(uuid: finding_uuids) # rubocop: disable CodeReuse/ActiveRecord
         .to_h { |vf| [vf.uuid, vf] }
 
-      update_vulnerability_scanners!(@report.findings) if optimize_sql_query_for_security_report_enabled?
+      update_vulnerability_scanners!(@report.findings)
 
       vulnerability_ids = @report.findings.map do |finding|
         create_vulnerability_finding(vulnerability_findings_by_uuid, finding)&.id
       end.compact.uniq
 
-      if optimize_sql_query_for_security_report_enabled?
-        update_vulnerability_links_info
-        create_vulnerability_pipeline_objects
-        update_vulnerabilities_identifiers
-        update_vulnerabilities_finding_identifiers
-      end
+      update_vulnerability_links_info
+      create_vulnerability_pipeline_objects
+      update_vulnerabilities_identifiers
+      update_vulnerabilities_finding_identifiers
 
       vulnerability_ids
     end
@@ -85,8 +77,6 @@ module Security
 
       vulnerability_finding_to_finding_map[vulnerability_finding] = finding
 
-      update_vulnerability_scanner(finding) unless optimize_sql_query_for_security_report_enabled?
-
       update_vulnerability_finding(vulnerability_finding, vulnerability_params)
       reset_remediations_for(vulnerability_finding, finding)
 
@@ -95,17 +85,6 @@ module Security
         update_finding_signatures(finding, vulnerability_finding)
       end
 
-      unless optimize_sql_query_for_security_report_enabled?
-        # The maximum number of identifiers is not used in validation
-        # we just want to ignore the rest if a finding has more than that.
-        finding.identifiers.take(Vulnerabilities::Finding::MAX_NUMBER_OF_IDENTIFIERS).map do |identifier| # rubocop: disable CodeReuse/ActiveRecord
-          create_or_update_vulnerability_identifier_object(vulnerability_finding, identifier)
-        end
-
-        create_or_update_vulnerability_links(finding, vulnerability_finding)
-        create_vulnerability_pipeline_object(vulnerability_finding, pipeline)
-      end
-
       create_vulnerability(vulnerability_finding, pipeline)
     end
 

ee/config/feature_flags/development/optimize_sql_query_for_security_report.yml

----
-name: optimize_sql_query_for_security_report
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/57426
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/323059
-milestone: '13.11'
-type: development
-group: group::static analysis
-default_enabled: false

ee/spec/services/security/store_report_service_spec.rb

@@ -15,17 +15,13 @@ RSpec.describe Security::StoreReportService, '#execute' do
 
   subject { described_class.new(pipeline, report).execute }
 
-  where(:vulnerability_finding_signatures_enabled, :optimize_sql_query_for_security_report_ff) do
-    true  | true
-    true  | false
-    false | true
-    false | false
+  where(:vulnerability_finding_signatures_enabled) do
+    [true, false]
   end
 
   with_them do
     before do
       stub_feature_flags(vulnerability_finding_tracking_signatures: vulnerability_finding_signatures_enabled)
-      stub_feature_flags(optimize_sql_query_for_security_report: optimize_sql_query_for_security_report_ff)
       stub_licensed_features(
         sast: true,
         dependency_scanning: true,
@@ -675,7 +671,6 @@ RSpec.describe Security::StoreReportService, '#execute' do
       stub_feature_flags(
         vulnerability_finding_tracking_signatures: false
       )
-      stub_feature_flags(optimize_sql_query_for_security_report: true)
 
       expect do
         expect do