Remove generic_alert_fingerprinting FF

- Keep license check and adjust specs

ee/lib/ee/gitlab/alerting/notification_payload_parser.rb

@@ -26,8 +26,7 @@ module EE
         private
 
         def generic_alert_fingerprinting_enabled?
-          project.feature_available?(:generic_alert_fingerprinting) &&
-            project.beta_feature_available?(:generic_alert_fingerprinting)
+          project.feature_available?(:generic_alert_fingerprinting)
         end
       end
     end

ee/spec/lib/ee/gitlab/alerting/notification_payload_parser_spec.rb

@@ -35,14 +35,6 @@ RSpec.describe Gitlab::Alerting::NotificationPayloadParser do
           expect(fingerprint).to eq(expected_fingerprint)
         end
 
-        context 'feature not enabled' do
-          before do
-            stub_feature_flags(generic_alert_fingerprinting: false)
-          end
-
-          it { is_expected.to eq(nil) }
-        end
-
         context 'payload has no values' do
           let(:payload) do
             {

ee/spec/services/projects/alerting/notify_service_spec.rb

@@ -29,7 +29,7 @@ RSpec.describe Projects::Alerting::NotifyService do
         existing_alert # create existing alert
       end
 
-      context 'generic fingerprinting feature not enabled' do
+      context 'generic fingerprinting license not enabled' do
         let(:fingerprinting_enabled) { false }
 
         it 'creates AlertManagement::Alert' do
@@ -41,7 +41,7 @@ RSpec.describe Projects::Alerting::NotifyService do
         end
       end
 
-      context 'generic fingerprinting feature enabled' do
+      context 'generic fingerprinting license enabled' do
         let(:fingerprinting_enabled) { true }
 
         it 'does not create AlertManagement::Alert' do