Remove unused ProcessPrometheusAlertWorker worker

Changelog: changed

app/workers/all_queues.yml

@@ -1087,15 +1087,6 @@
   :weight: 2
   :idempotent: true
   :tags: []
-- :name: incident_management:incident_management_process_prometheus_alert
-  :worker_name: IncidentManagement::ProcessPrometheusAlertWorker
-  :feature_category: :incident_management
-  :has_external_dependencies:
-  :urgency: :low
-  :resource_boundary: :cpu
-  :weight: 2
-  :idempotent:
-  :tags: []
 - :name: jira_connect:jira_connect_sync_branch
   :worker_name: JiraConnect::SyncBranchWorker
   :feature_category: :integrations

app/workers/incident_management/process_prometheus_alert_worker.rb

-# frozen_string_literal: true
-
-module IncidentManagement
-  class ProcessPrometheusAlertWorker # rubocop:disable Scalability/IdempotentWorker
-    include ApplicationWorker
-
-    sidekiq_options retry: 3
-
-    queue_namespace :incident_management
-    feature_category :incident_management
-    worker_resource_boundary :cpu
-
-    def perform(project_id, alert_hash)
-      # no-op
-      #
-      # This worker is not scheduled anymore since
-      # https://gitlab.com/gitlab-org/gitlab/-/merge_requests/35943
-      # and will be removed completely via
-      # https://gitlab.com/gitlab-org/gitlab/-/issues/227146
-      # in 14.0.
-    end
-  end
-end

spec/workers/every_sidekiq_worker_spec.rb

@@ -306,7 +306,6 @@ RSpec.describe 'Every Sidekiq worker' do
         'IncidentManagement::OncallRotations::PersistAllRotationsShiftsJob' => 3,
         'IncidentManagement::OncallRotations::PersistShiftsJob' => 3,
         'IncidentManagement::PagerDuty::ProcessIncidentWorker' => 3,
-        'IncidentManagement::ProcessPrometheusAlertWorker' => 3,
         'InvalidGpgSignatureUpdateWorker' => 3,
         'IrkerWorker' => 3,
         'IssuableExportCsvWorker' => 3,

spec/workers/incident_management/process_prometheus_alert_worker_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe IncidentManagement::ProcessPrometheusAlertWorker do
-  describe '#perform' do
-    let_it_be(:project) { create(:project) }
-    let_it_be(:prometheus_alert) { create(:prometheus_alert, project: project) }
-
-    let(:payload_key) { Gitlab::AlertManagement::Payload::Prometheus.new(project: project, payload: alert_params).gitlab_fingerprint }
-    let!(:prometheus_alert_event) { create(:prometheus_alert_event, prometheus_alert: prometheus_alert, payload_key: payload_key) }
-    let!(:settings) { create(:project_incident_management_setting, project: project, create_issue: true) }
-
-    let(:alert_params) do
-      {
-        startsAt: prometheus_alert.created_at.rfc3339,
-        labels: {
-          gitlab_alert_id: prometheus_alert.prometheus_metric_id
-        }
-      }.with_indifferent_access
-    end
-
-    it 'does nothing' do
-      expect { subject.perform(project.id, alert_params) }
-        .not_to change(Issue, :count)
-    end
-  end
-end