Remove deprecated CI workers and arguments

Remove the PipelineUpdateWorker and its queue and remove the
build_ids argument from PipelineProcessWorker. Both have been
deprecated for a few milestones.

Changelog: removed
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/63323

app/workers/all_queues.yml

@@ -1622,15 +1622,6 @@
   :weight: 5
   :idempotent:
   :tags: []
-- :name: pipeline_processing:pipeline_update
-  :worker_name: PipelineUpdateWorker
-  :feature_category: :continuous_integration
-  :has_external_dependencies:
-  :urgency: :high
-  :resource_boundary: :unknown
-  :weight: 5
-  :idempotent: true
-  :tags: []
 - :name: pipeline_processing:stage_update
   :worker_name: StageUpdateWorker
   :feature_category: :continuous_integration

app/workers/pipeline_process_worker.rb

@@ -13,9 +13,7 @@ class PipelineProcessWorker # rubocop:disable Scalability/IdempotentWorker
   data_consistency :delayed, feature_flag: :load_balancing_for_pipeline_process_worker
 
   # rubocop: disable CodeReuse/ActiveRecord
-  # `_build_ids` is deprecated and will be removed in 14.0
-  # See: https://gitlab.com/gitlab-org/gitlab/-/issues/232806
-  def perform(pipeline_id, _build_ids = nil)
+  def perform(pipeline_id)
     Ci::Pipeline.find_by(id: pipeline_id).try do |pipeline|
       Ci::ProcessPipelineService
         .new(pipeline)

app/workers/pipeline_update_worker.rb

-# frozen_string_literal: true
-
-# This worker is deprecated and will be removed in 14.0
-# See: https://gitlab.com/gitlab-org/gitlab/-/issues/232806
-class PipelineUpdateWorker
-  include ApplicationWorker
-
-  sidekiq_options retry: 3
-  include PipelineQueue
-
-  queue_namespace :pipeline_processing
-  urgency :high
-
-  idempotent!
-
-  def perform(_pipeline_id)
-    # no-op
-  end
-end

spec/workers/every_sidekiq_worker_spec.rb

@@ -371,7 +371,6 @@ RSpec.describe 'Every Sidekiq worker' do
         'PipelineMetricsWorker' => 3,
         'PipelineNotificationWorker' => 3,
         'PipelineProcessWorker' => 3,
-        'PipelineUpdateWorker' => 3,
         'PostReceive' => 3,
         'ProcessCommitWorker' => 3,
         'ProjectCacheWorker' => 3,