Remove pipeline_schedules_with_tags feature flag

This removes the pipeline_schedules_with_tags feature flag and enables
using tags for pipeline schedules across all environments.

Changelog: added

app/assets/javascripts/pages/projects/pipeline_schedules/shared/init_form.js

@@ -33,13 +33,7 @@ function initIntervalPatternInput() {
 }
 
 function getEnabledRefTypes() {
-  const refTypes = [REF_TYPE_BRANCHES];
-
-  if (gon.features.pipelineSchedulesWithTags) {
-    refTypes.push(REF_TYPE_TAGS);
-  }
-
-  return refTypes;
+  return [REF_TYPE_BRANCHES, REF_TYPE_TAGS];
 }
 
 function initTargetRefDropdown() {
@@ -61,9 +55,7 @@ function initTargetRefDropdown() {
           value: $refField.value,
           useSymbolicRefNames: true,
           translations: {
-            dropdownHeader: gon.features.pipelineSchedulesWithTags
-              ? __('Select target branch or tag')
-              : __('Select target branch'),
+            dropdownHeader: __('Select target branch or tag'),
           },
         },
         class: 'gl-w-full',

app/controllers/projects/pipeline_schedules_controller.rb

@@ -10,10 +10,6 @@ class Projects::PipelineSchedulesController < Projects::ApplicationController
   before_action :authorize_update_pipeline_schedule!, except: [:index, :new, :create, :play]
   before_action :authorize_admin_pipeline_schedule!, only: [:destroy]
 
-  before_action do
-    push_frontend_feature_flag(:pipeline_schedules_with_tags, @project, default_enabled: :yaml)
-  end
-
   feature_category :continuous_integration
 
   # rubocop: disable CodeReuse/ActiveRecord

app/views/projects/pipeline_schedules/_form.html.haml

@@ -15,7 +15,7 @@
       = f.text_field :cron_timezone, value: @schedule.cron_timezone, id: 'schedule_cron_timezone', class: 'hidden', name: 'schedule[cron_timezone]', required: true
   .form-group.row
     .col-md-9
-      = f.label :ref, Feature.enabled?(:pipeline_schedules_with_tags, default_enabled: :yaml) ? _('Target branch or tag') : _('Target branch'), class: 'label-bold'
+      = f.label :ref, _('Target branch or tag'), class: 'label-bold'
       %div{ data: { testid: 'schedule-target-ref' } }
         .js-target-ref-dropdown{ data: { project_id: @project.id, default_branch: @project.default_branch } }
       = f.text_field :ref, value: @schedule.ref, id: 'schedule_ref', class: 'hidden', name: 'schedule[ref]', required: true

config/feature_flags/development/pipeline_schedules_with_tags.yml

----
-name: pipeline_schedules_with_tags
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/81476
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/354421
-milestone: '14.9'
-type: development
-group: group::pipeline execution
-default_enabled: true