Drop remaining Python < 3.8 support (#44743)

Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>
Co-authored-by: Franck Nijhof <git@frenck.dev>

homeassistant/util/thread.py

@@ -1,33 +1,10 @@
 """Threading util helpers."""
 import ctypes
 import inspect
-import sys
 import threading
 from typing import Any
 
 
-def fix_threading_exception_logging() -> None:
-    """Fix threads passing uncaught exceptions to our exception hook.
-
-    https://bugs.python.org/issue1230540
-    Fixed in Python 3.8.
-    """
-    if sys.version_info[:2] >= (3, 8):
-        return
-
-    run_old = threading.Thread.run
-
-    def run(*args: Any, **kwargs: Any) -> None:
-        try:
-            run_old(*args, **kwargs)
-        except (KeyboardInterrupt, SystemExit):  # pylint: disable=try-except-raise
-            raise
-        except Exception:  # pylint: disable=broad-except
-            sys.excepthook(*sys.exc_info())
-
-    threading.Thread.run = run  # type: ignore
-
-
 def _async_raise(tid: int, exctype: Any) -> None:
     """Raise an exception in the threads with id tid."""
     if not inspect.isclass(exctype):