remove only marginally helpful helper

Author: domZippilli

lightning/src/util/persist.rs

@@ -672,13 +672,6 @@ mod tests {
         assert!(persister.kv.remove("namespace", "key",).is_err());
     }
 
-    fn is_sorted<T>(data: &[T]) -> bool
-    where
-        T: Ord,
-    {
-        data.windows(2).all(|w| w[0] <= w[1])
-    }
-
     // =================================
     // TESTS
     // =================================
@@ -794,7 +787,7 @@ mod tests {
         // Check that we get the right number of updates, in order
         let listed_update_names = persister.list_update_names(&monitor_name).unwrap();
         assert_eq!(listed_update_names.len(), 999);
-        assert!(is_sorted(&listed_update_names));
+        assert!(&listed_update_names.windows(2).all(|w| w[0] <= w[1]));
     }
 
     #[test]