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

pre-commit-ci[bot] · pre-commit-ci[bot] · commit 11c74ec6710c · 2025-07-04T15:39:47.000Z
for more information, see https://pre-commit.ci
diff --git a/data_structures/binary_tree/red_black_tree.py b/data_structures/binary_tree/red_black_tree.py
@@ -838,7 +838,6 @@ def main() -> None:
     """
     >>> pytests()
     """
-    
 
     failures, _ = doctest.testmod()
     if failures == 0:
