Update demo2.py

demo2.py

@@ -123,7 +123,7 @@ class DemoDataset(datasets.GeneratorBasedBuilder):
         ]
 
     # method parameters are unpacked from `gen_kwargs` as given in `_split_generators`
-    def _generate_examples(self, filepath, split):
+    def _generate_examples(self, filepath):
         key = 0
         with open(filepath, encoding="utf-8") as f:
             reader = csv.DictReader(f)