logadmin: Delete test buckets only after 24 hours

Change-Id: I3a452ade6784ff9027e0d36b0dd2ccacafd737da
Reviewed-on: https://code-review.googlesource.com/c/35814
Reviewed-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jean de Klerk <deklerk@google.com>
diff --git a/logging/logadmin/sinks_test.go b/logging/logadmin/sinks_test.go
index d1066ee..1762a6c 100644
--- a/logging/logadmin/sinks_test.go
+++ b/logging/logadmin/sinks_test.go
@@ -86,9 +86,6 @@
 			}
 		}
 		return func() {
-			if err := storageClient.Bucket(testBucket).Delete(ctx); err != nil {
-				log.Printf("deleting %q: %v", testBucket, err)
-			}
 			storageClient.Close()
 		}
 	}