Simplify logging.config type imports (#10077)

Author: sobolevn

stdlib/logging/config.pyi

@@ -5,14 +5,10 @@ from configparser import RawConfigParser
 from re import Pattern
 from threading import Thread
 from typing import IO, Any
+from typing_extensions import Literal, TypedDict
 
 from . import _Level
 
-if sys.version_info >= (3, 8):
-    from typing import Literal, TypedDict
-else:
-    from typing_extensions import Literal, TypedDict
-
 DEFAULT_LOGGING_CONFIG_PORT: int
 RESET_ERROR: int  # undocumented
 IDENTIFIER: Pattern[str]  # undocumented