[gold] Remove dangling format string

Change-Id: I909a7678ef5422823aafea3e8a34c22c6ea61eb1
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/419376
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
diff --git a/golden/cmd/gold_ingestion/gold_ingestion.go b/golden/cmd/gold_ingestion/gold_ingestion.go
index a556c8e..111404f 100644
--- a/golden/cmd/gold_ingestion/gold_ingestion.go
+++ b/golden/cmd/gold_ingestion/gold_ingestion.go
@@ -468,7 +468,7 @@
 			totalProcessed += processed
 		}
 		pollingLiveness.Reset()
-		sklog.Infof("Total backup polling [%s,%s] processed/ignored: %d/%d/%d", startTime, endTime, totalProcessed, totalIgnored)
+		sklog.Infof("Total backup polling [%s,%s] processed/ignored: %d/%d", startTime, endTime, totalProcessed, totalIgnored)
 	})
 }