Fix dev branch (#22493)

homeassistant/components/homekit_controller/__init__.py

@@ -1,6 +1,5 @@
 """Support for Homekit device discovery."""
 import logging
-import os
 
 from homeassistant.components.discovery import SERVICE_HOMEKIT
 from homeassistant.helpers import discovery
@@ -9,7 +8,7 @@ from homeassistant.helpers.entity import Entity
 from .config_flow import load_old_pairings
 from .connection import get_accessory_information, HKDevice
 from .const import (
-    CONTROLLER, HOMEKIT_DIR, KNOWN_DEVICES, PAIRING_FILE
+    CONTROLLER, KNOWN_DEVICES
 )
 from .const import DOMAIN   # noqa: pylint: disable=unused-import