remove redundant `pipeline`

app/presenters/ci/pipeline_status_badge_presenter.rb

@@ -7,7 +7,7 @@ module Ci
     end
 
     def status_title
-      "Pipeline is redundant and is auto-canceled by Pipeline ##{pipeline.auto_canceled_by_id}" if auto_canceled?
+      "Pipeline is redundant and is auto-canceled by Pipeline ##{auto_canceled_by_id}" if auto_canceled?
     end
   end
 end