delete blank line

Author: realDuYuanChao

sorts/bucket_sort.py

@@ -63,6 +63,5 @@ def bucket_sort(my_list: list) -> list:
     from doctest import testmod
 
     testmod()
-    
     assert bucket_sort([4, 5, 3, 2, 1]) == [1, 2, 3, 4, 5]
     assert bucket_sort([0, 1, -10, 15, 2, -2]) == [-10, -2, 0, 1, 2, 15]