[pre-commit.ci] auto fixes from pre-commit.com hooks

pre-commit-ci[bot] · pre-commit-ci[bot] · commit 28a57e81a0d0 · 2025-07-04T15:54:20.000Z
for more information, see https://pre-commit.ci
diff --git a/data_structures/binary_tree/avl_tree.py b/data_structures/binary_tree/avl_tree.py
@@ -332,7 +332,6 @@ def __str__(
 
 
 def _test() -> None:
-
     doctest.testmod()
 
 
