Update app.py

app.py

@@ -34,7 +34,6 @@ def download_dataset_file(dataset_id, local_dir):
         print("Checking file: ", file_name)
         if file_name.endswith(".csv"):
             print("Found CSV file: ", file_name)
-            source_file = os.path.join(snapshot_path, file_name)
             local_file_path = os.path.join(local_dir, file_name)
             shutil.move(source_file, local_file_path)