Remove **self._metric_kwargs[key] from compute as it wasn't existed

lm_eval/api/task.py

@@ -868,7 +868,7 @@ class ConfigurableTask(Task):
 
             for key, result in zip(self._metric_fn_list.keys(), results):
                 _dict = self._metric_fn_list[key].compute(
-                    references=[gold], predictions=[result], **self._metric_kwargs[key]
+                    references=[gold], predictions=[result]
                 )
 
                 result_dict = {**result_dict, **_dict}