[email.utils] Remove non-existing overload of parsedate_to_datetime (#15280)

Author: viccie30

stdlib/email/utils.pyi

@@ -44,16 +44,7 @@ def parsedate(data: str) -> tuple[int, int, int, int, int, int, int, int, int] |
 def parsedate_tz(data: None) -> None: ...
 @overload
 def parsedate_tz(data: str) -> _PDTZ | None: ...
-
-if sys.version_info >= (3, 10):
-    @overload
-    def parsedate_to_datetime(data: None) -> None: ...
-    @overload
-    def parsedate_to_datetime(data: str) -> datetime.datetime: ...
-
-else:
-    def parsedate_to_datetime(data: str) -> datetime.datetime: ...
-
+def parsedate_to_datetime(data: str) -> datetime.datetime: ...
 def mktime_tz(data: _PDTZ) -> int: ...
 def formatdate(timeval: float | None = None, localtime: bool = False, usegmt: bool = False) -> str: ...
 def format_datetime(dt: datetime.datetime, usegmt: bool = False) -> str: ...