Remove experiment feature flag for notification dot

- experiment was successful.

ee/app/helpers/ee/ci/runners_helper.rb

@@ -7,20 +7,20 @@ module EE
       BUY_PIPELINE_MINUTES_NOTIFICATION_DOT = 'buy_pipeline_minutes_notification_dot'
 
       def show_buy_pipeline_minutes?(project, namespace)
-        return false unless experiment_enabled?(:ci_notification_dot)
+        return false unless ::Gitlab.dev_env_or_com?
 
         show_out_of_pipeline_minutes_notification?(project, namespace)
       end
 
       def show_pipeline_minutes_notification_dot?(project, namespace)
-        return false unless experiment_enabled?(:ci_notification_dot)
+        return false unless ::Gitlab.dev_env_or_com?
         return false if notification_dot_acknowledged?
 
         show_out_of_pipeline_minutes_notification?(project, namespace)
       end
 
       def show_buy_pipeline_with_subtext?(project, namespace)
-        return false unless experiment_enabled?(:ci_notification_dot)
+        return false unless ::Gitlab.dev_env_or_com?
         return false unless notification_dot_acknowledged?
 
         show_out_of_pipeline_minutes_notification?(project, namespace)

ee/changelogs/unreleased/298795-ci_notification_dot-experiment-successful-cleanup.yml

+---
+title: Cleanup ci_notification_dot experiment
+merge_request: 54721
+author:
+type: added

ee/config/feature_flags/experiment/ci_notification_dot_experiment_percentage.yml

----
-name: ci_notification_dot_experiment_percentage
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/27626
-rollout_issue_url: https://gitlab.com/gitlab-org/growth/team-tasks/-/issues/101
-milestone: '12.10'
-type: experiment
-group: group::expansion
-default_enabled: false

ee/spec/helpers/ee/ci/runners_helper_spec.rb

@@ -21,13 +21,13 @@ RSpec.describe EE::Ci::RunnersHelper do
     end
 
     context 'with a project and namespace' do
-      context 'when experiment is disabled' do
-        let(:experiment_status) { false }
+      context 'when not on dot com' do
+        let(:dev_env_or_com) { false }
 
         it { is_expected.to be_falsey }
       end
 
-      context 'when experiment is enabled' do
+      context 'when on dot com' do
         it { is_expected.to be_truthy }
 
         context 'without a persisted project passed' do
@@ -82,15 +82,15 @@ RSpec.describe EE::Ci::RunnersHelper do
   end
 
   context 'with notifications' do
-    let(:experiment_status) { true }
+    let(:dev_env_or_com) { true }
 
     describe '.show_buy_pipeline_minutes?' do
       subject { helper.show_buy_pipeline_minutes?(project, namespace) }
 
-      context 'when experiment is "ci_notification_dot"' do
+      context 'when on dot com' do
         it_behaves_like 'minutes notification' do
           before do
-            allow(helper).to receive(:experiment_enabled?).with(:ci_notification_dot).and_return(experiment_status)
+            allow(::Gitlab).to receive(:dev_env_or_com?).and_return(dev_env_or_com)
           end
         end
       end
@@ -100,7 +100,7 @@ RSpec.describe EE::Ci::RunnersHelper do
       subject { helper.show_pipeline_minutes_notification_dot?(project, namespace) }
 
       before do
-        allow(helper).to receive(:experiment_enabled?).with(:ci_notification_dot).and_return(experiment_status)
+        allow(::Gitlab).to receive(:dev_env_or_com?).and_return(dev_env_or_com)
       end
 
       it_behaves_like 'minutes notification'
@@ -127,7 +127,7 @@ RSpec.describe EE::Ci::RunnersHelper do
       subject { helper.show_buy_pipeline_with_subtext?(project, namespace) }
 
       before do
-        allow(helper).to receive(:experiment_enabled?).with(:ci_notification_dot).and_return(experiment_status)
+        allow(::Gitlab).to receive(:dev_env_or_com?).and_return(dev_env_or_com)
       end
 
       context 'when the notification dot has not been acknowledged' do

lib/gitlab/experimentation.rb

@@ -34,10 +34,6 @@
 module Gitlab
   module Experimentation
     EXPERIMENTS = {
-      ci_notification_dot: {
-        tracking_category: 'Growth::Expansion::Experiment::CiNotificationDot',
-        use_backwards_compatible_subject_index: true
-      },
       upgrade_link_in_user_menu_a: {
         tracking_category: 'Growth::Expansion::Experiment::UpgradeLinkInUserMenuA',
         use_backwards_compatible_subject_index: true

spec/lib/gitlab/experimentation_spec.rb

@@ -7,7 +7,6 @@ require 'spec_helper'
 RSpec.describe Gitlab::Experimentation::EXPERIMENTS do
   it 'temporarily ensures we know what experiments exist for backwards compatibility' do
     expected_experiment_keys = [
-      :ci_notification_dot,
       :upgrade_link_in_user_menu_a,
       :invite_members_version_a,
       :invite_members_version_b,