no need to iterate over results for greedy_until

lm_eval/api/task.py

@@ -1017,8 +1017,8 @@ class ConfigurableTask(Task):
             else:
                 gold = str(gold)
 
+            result, _ = results
             for metric in self._metric_fn_list.keys():
-                for result in results:
                 if self.multiple_target:
                     # in the case where we have multiple targets,
                     # return true if any are true