style: remove unnecessary blank lines from heap sort

Author: Ashwin121425-R

sorts/heap_sort.py

@@ -64,14 +64,11 @@ def heap_sort[T: Comparable](unsorted: list[T]) -> list[T]:
     TypeError: ...
     """
     n = len(unsorted)
-
     for i in range(n // 2 - 1, -1, -1):
         heapify(unsorted, i, n)
-
     for i in range(n - 1, 0, -1):
         unsorted[0], unsorted[i] = unsorted[i], unsorted[0]
         heapify(unsorted, 0, i)
-
     return unsorted