Drop asynctest (#44746)

tests/components/script/test_init.py

@@ -2,6 +2,7 @@
 # pylint: disable=protected-access
 import asyncio
 import unittest
+from unittest.mock import Mock, patch
 
 import pytest
 
@@ -23,7 +24,6 @@ from homeassistant.helpers.service import async_get_all_descriptions
 from homeassistant.loader import bind_hass
 from homeassistant.setup import async_setup_component, setup_component
 
-from tests.async_mock import Mock, patch
 from tests.common import async_mock_service, get_test_home_assistant
 from tests.components.logbook.test_init import MockLazyEventPartialState