diff --git a/parser/parser.py b/parser/parser.py
index 6cfc2fb..a901ec2 100644
--- a/parser/parser.py
+++ b/parser/parser.py
@@ -135,7 +135,6 @@ import bisect
 import collections
 import dataclasses
 import enum
-import functools
 import inspect
 import itertools
 import json