Remove expired_pat_email_notification feature flag

The flag was introduced in 13.3 and has been stable
for a release.

app/workers/personal_access_tokens/expired_notification_worker.rb

@@ -8,8 +8,6 @@ module PersonalAccessTokens
     feature_category :authentication_and_authorization
 
     def perform(*args)
-      return unless Feature.enabled?(:expired_pat_email_notification)
-
       notification_service = NotificationService.new
 
       User.with_personal_access_tokens_expired_today.find_each do |user|

changelogs/unreleased/deprecate_expired_pat_email_notification.yml

+---
+title: Remove expired_pat_email_notification feature flag
+merge_request: 41166
+author:
+type: changed

doc/user/profile/personal_access_tokens.md

@@ -20,7 +20,6 @@ Personal access tokens expire on the date you define, at midnight UTC.
 
 - GitLab runs a check at 01:00 AM UTC every day to identify personal access tokens that expire in under seven days. The owners of these tokens are notified by email.
 - GitLab runs a check at 02:00 AM UTC every day to identify personal access tokens that expired on the current date. The owners of these tokens are notified by email.
-To turn on the notification for expired personal access tokens in GitLab self-managed instances, ask a GitLab administrator to [enable it](#enable-or-disable-notification-for-expired-personal-access-token). **(CORE ONLY)**
 - In GitLab Ultimate, administrators may [limit the lifetime of personal access tokens](../admin_area/settings/account_and_limit_settings.md#limiting-lifetime-of-personal-access-tokens).
 - In GitLab Ultimate, administrators may [toggle enforcement of personal access token expiry](../admin_area/settings/account_and_limit_settings.md#optional-enforcement-of-personal-access-token-expiry).
 
@@ -42,23 +41,6 @@ profile.
 1. Save the personal access token somewhere safe. If you navigate away or refresh
 your page, and you did not save the token, you must create a new one.
 
-## Enable or disable notification for Expired personal access token **(CORE ONLY)**
-
-[GitLab administrators with access to the GitLab Rails console](../../administration/feature_flags.md)
-can enable it for your instance.
-
-To enable it:
-
-```ruby
-Feature.enable(:expired_pat_email_notification)
-```
-
-To disable it:
-
-```ruby
-Feature.disable(:expired_pat_email_notification)
-```
-
 ### Revoking a personal access token
 
 At any time, you can revoke any personal access token by clicking the

spec/workers/personal_access_tokens/expired_notification_worker_spec.rb

@@ -9,32 +9,16 @@ RSpec.describe PersonalAccessTokens::ExpiredNotificationWorker, type: :worker do
     context 'when a token has expired' do
       let(:expired_today) { create(:personal_access_token, expires_at: Date.current) }
 
-      context 'when feature is enabled' do
-        it 'uses notification service to send email to the user' do
-          expect_next_instance_of(NotificationService) do |notification_service|
-            expect(notification_service).to receive(:access_token_expired).with(expired_today.user)
-          end
-
-          worker.perform
+      it 'uses notification service to send email to the user' do
+        expect_next_instance_of(NotificationService) do |notification_service|
+          expect(notification_service).to receive(:access_token_expired).with(expired_today.user)
         end
 
-        it 'updates notified column' do
-          expect { worker.perform }.to change { expired_today.reload.after_expiry_notification_delivered }.from(false).to(true)
-        end
+        worker.perform
       end
 
-      context 'when feature is disabled' do
-        before do
-          stub_feature_flags(expired_pat_email_notification: false)
-        end
-
-        it 'does not update notified column' do
-          expect { worker.perform }.not_to change { expired_today.reload.after_expiry_notification_delivered }
-        end
-
-        it 'does not trigger email' do
-          expect { worker.perform }.not_to change { ActionMailer::Base.deliveries.count }
-        end
+      it 'updates notified column' do
+        expect { worker.perform }.to change { expired_today.reload.after_expiry_notification_delivered }.from(false).to(true)
       end
     end