Update msmarco-passage-query-variation.py

msmarco-passage-query-variation.py

@@ -103,7 +103,7 @@ class MsMarcoPassage(datasets.GeneratorBasedBuilder):
     def _generate_examples(self, files):
         """Yields examples."""
         for filepath in files:
-            with open(filepath, encoding="utf-8") as f:
+            with open(filepath) as f:
                 for line in f:
                     data = json.loads(line)
                     if data.get('negative_passages') is None: