Remove tracking registry when project gets deleted on primary node

app/services/projects/destroy_service.rb

@@ -52,6 +52,7 @@ module Projects
       flush_caches(project, wiki_path)
 
       trash_repositories!
+      remove_tracking_registry!
       log_info("Project \"#{project.name}\" was removed")
     end
 
@@ -98,6 +99,12 @@ module Projects
       project.container_registry_repository.delete_tags
     end
 
+    def remove_tracking_registry!
+      return unless Gitlab::Geo.secondary?
+
+      Geo::ProjectRegistry.where(project_id: project.id).delete_all
+    end
+
     def raise_error(message)
       raise DestroyError.new(message)
     end