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

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

maths/factorial_iterative.py

@@ -21,4 +21,3 @@ def factorial_iterative(number: int) -> int:
 if __name__ == "__main__":
     # simple demonstration
     print(factorial_iterative(5))  # expected 120
-