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

Author: pre-commit-ci[bot]

stdlib/@tests/test_cases/check_functools.py

@@ -115,7 +115,6 @@ def check_singledispatch_simple() -> None:
     def sd_fun(arg: object) -> str:
         return ""
 
-
     @sd_fun.register
     def _(int_arg: int) -> str:
         return ""
@@ -132,7 +131,6 @@ def check_singledispatch_additional_args() -> None:
     def sd_fun(arg: object, posonly: str, /, verbose: bool = False) -> str:
         return ""
 
-
     @sd_fun.register
     def _(int_arg: int, posonly: str, /, verbose: bool = False) -> str:
         return ""