remove unused import

diff --git a/src/bigint_presentation_code/util.py b/src/bigint_presentation_code/util.py
index 4b7399fc83400ac7ea94bb5517251b5de7d5ce6f..87c6975425dbfd4fdec64df750a0110924c648ee 100644 (file)
--- a/src/bigint_presentation_code/util.py
+++ b/src/bigint_presentation_code/util.py
@@ -1,5 +1,4 @@
 from abc import ABCMeta, abstractmethod
-from functools import lru_cache
 from typing import (AbstractSet, Any, Iterable, Iterator, Mapping, MutableSet,
                     TypeVar, overload)