Merge branch '336557-fix-ci-cross-join-instance-security-dashboard-all-pipelines' into 'master'

Remove unused method InstanceSecurityDashboard#all_pipelines

See merge request gitlab-org/gitlab!66503

ee/app/models/instance_security_dashboard.rb

@@ -10,10 +10,6 @@ class InstanceSecurityDashboard
     @user = user
   end
 
-  def all_pipelines
-    ::Ci::Pipeline.where(project_id: users_projects_with_security_reports)
-  end
-
   def project_ids_with_security_reports
     users_projects_with_security_reports.pluck(:project_id)
   end

ee/spec/models/instance_security_dashboard_spec.rb

@@ -21,12 +21,6 @@ RSpec.describe InstanceSecurityDashboard do
 
   subject { described_class.new(user, project_ids: project_ids) }
 
-  describe '#all_pipelines' do
-    it 'returns pipelines for the projects with security reports' do
-      expect(subject.all_pipelines).to contain_exactly(pipeline1)
-    end
-  end
-
   describe '#project_ids_with_security_reports' do
     context 'when given project IDs' do
       it "returns the project IDs that are also on the user's security dashboard" do