diff --git a/combo/data/api.py b/combo/data/api.py
index c8e08ded0a3948745fef8accba57bb9d6fe44b8c..ae4ef35a0ee4e8958b8663b0721bb064adb170d7 100644
--- a/combo/data/api.py
+++ b/combo/data/api.py
@@ -36,10 +36,6 @@ def sentence2conllu(sentence: Sentence, keep_semrel: bool = True) -> conllu.mode
     tokens = []
     for token in sentence.tokens:
         token_dict = collections.OrderedDict(token.as_dict(keep_semrel))
-        # Remove semrel to have default conllu format.
-        # if not keep_semrel:
-        #     del token_dict["semrel"]
-        # del token_dict["embeddings"]
         tokens.append(token_dict)
     # Range tokens must be tuple not list, this is conllu library requirement
     for t in tokens: