Remove by default enabled feature flag

Remove the by default enabled
preload_associations_jobs_request_api_endpoint
feature flag, since the have been no issues.

Changelog: other

app/models/ci/processable.rb

@@ -169,13 +169,9 @@ module Ci
     end
 
     def all_dependencies
-      if Feature.enabled?(:preload_associations_jobs_request_api_endpoint, project, default_enabled: :yaml)
       strong_memoize(:all_dependencies) do
         dependencies.all
       end
-      else
-        dependencies.all
-      end
     end
 
     private

app/presenters/ci/build_runner_presenter.rb

@@ -58,11 +58,7 @@ module Ci
     # rubocop: disable CodeReuse/ActiveRecord
     def all_dependencies
       dependencies = super
-
-      if Feature.enabled?(:preload_associations_jobs_request_api_endpoint, project, default_enabled: :yaml)
       ActiveRecord::Associations::Preloader.new.preload(dependencies, :job_artifacts_archive)
-      end
-
       dependencies
     end
     # rubocop: enable CodeReuse/ActiveRecord

config/feature_flags/development/preload_associations_jobs_request_api_endpoint.yml

----
-name: preload_associations_jobs_request_api_endpoint
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/57694
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/326477
-milestone: "13.11"
-type: development
-group: group::pipeline execution
-default_enabled: true

spec/requests/api/ci/runner/jobs_request_post_spec.rb

@@ -506,25 +506,6 @@ RSpec.describe API::Ci::Runner, :clean_gitlab_redis_shared_state do
             end
 
             describe 'preloading job_artifacts_archive' do
-              context 'when the feature flag is disabled' do
-                before do
-                  stub_feature_flags(preload_associations_jobs_request_api_endpoint: false)
-                end
-
-                it 'queries the ci_job_artifacts table multiple times' do
-                  expect { request_job }.to exceed_all_query_limit(1).for_model(::Ci::JobArtifact)
-                end
-
-                it 'queries the ci_builds table more than three times' do
-                  expect { request_job }.to exceed_all_query_limit(3).for_model(::Ci::Build)
-                end
-              end
-
-              context 'when the feature flag is enabled' do
-                before do
-                  stub_feature_flags(preload_associations_jobs_request_api_endpoint: true)
-                end
-
               it 'queries the ci_job_artifacts table once only' do
                 expect { request_job }.not_to exceed_all_query_limit(1).for_model(::Ci::JobArtifact)
               end
@@ -534,7 +515,6 @@ RSpec.describe API::Ci::Runner, :clean_gitlab_redis_shared_state do
               end
             end
           end
-          end
 
           context 'when pipeline have jobs with artifacts' do
             let!(:job) { create(:ci_build, :pending, :queued, :tag, :artifacts, pipeline: pipeline, name: 'spinach', stage: 'test', stage_idx: 0) }