Merge branch 'pl-alerts-service-fix-broken-foss' into 'master'

Reference AlertsService only in EE

See merge request gitlab-org/gitlab!17702

ee/lib/ee/api/helpers/services_helpers.rb

@@ -12,6 +12,7 @@ module EE
           override :services
           def services
             super.merge(
+              'alerts' => [],
               'github' => [
                 {
                   required: true,

lib/api/helpers/services_helpers.rb

@@ -155,7 +155,6 @@ module API
 
       def self.services
         {
-          'alerts' => [],
           'asana' => [
             {
               required: true,
@@ -697,7 +696,6 @@ module API
 
       def self.service_classes
         [
-          ::AlertsService,
           ::AsanaService,
           ::AssemblaService,
           ::BambooService,