Remove feature flag buy_ci_minutes_version_a

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

@@ -7,7 +7,7 @@ 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) || experiment_enabled?(:buy_ci_minutes_version_a)
+        return false unless experiment_enabled?(:ci_notification_dot)
 
         show_out_of_pipeline_minutes_notification?(project, namespace)
       end

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

@@ -91,16 +91,6 @@ RSpec.describe EE::Ci::RunnersHelper do
         it_behaves_like 'minutes notification' do
           before do
             allow(helper).to receive(:experiment_enabled?).with(:ci_notification_dot).and_return(experiment_status)
-            allow(helper).to receive(:experiment_enabled?).with(:buy_ci_minutes_version_a).and_return(false)
-          end
-        end
-      end
-
-      context 'when experiment is "ci_minutes_version_a"' do
-        it_behaves_like 'minutes notification' do
-          before do
-            allow(helper).to receive(:experiment_enabled?).with(:ci_notification_dot).and_return(false)
-            allow(helper).to receive(:experiment_enabled?).with(:buy_ci_minutes_version_a).and_return(experiment_status)
           end
         end
       end

lib/gitlab/experimentation.rb

@@ -42,9 +42,6 @@ module Gitlab
       ci_notification_dot: {
         tracking_category: 'Growth::Expansion::Experiment::CiNotificationDot'
       },
-      buy_ci_minutes_version_a: {
-        tracking_category: 'Growth::Expansion::Experiment::BuyCiMinutesVersionA'
-      },
       upgrade_link_in_user_menu_a: {
         tracking_category: 'Growth::Expansion::Experiment::UpgradeLinkInUserMenuA'
       },