remove __index_level_0__ column

README.md

@@ -12,14 +12,12 @@ dataset_info:
     dtype: string
   - name: canonical_smiles
     dtype: string
-  - name: __index_level_0__
-    dtype: int64
   splits:
   - name: test
-    num_bytes: 456723
+    num_bytes: 424723
     num_examples: 4000
-  download_size: 235993
-  dataset_size: 456723
+  download_size: 209453
+  dataset_size: 424723
 configs:
 - config_name: default
   data_files:

data/test-00000-of-00001.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:b3025e2e7dba48d91d2945126a499e66443e2dabc665a45c46f27af2fe6845e8
-size 235993
+oid sha256:590558649878f9ff77e389e09b97249be093503d17b8cee219b67d4f372ca0eb
+size 209453