Drop asynctest (#44746)

tests/components/http/test_view.py

@@ -1,4 +1,6 @@
 """Tests for Home Assistant View."""
+from unittest.mock import AsyncMock, Mock
+
 from aiohttp.web_exceptions import (
     HTTPBadRequest,
     HTTPInternalServerError,
@@ -13,8 +15,6 @@ from homeassistant.components.http.view import (
 )
 from homeassistant.exceptions import ServiceNotFound, Unauthorized
 
-from tests.async_mock import AsyncMock, Mock
-
 
 @pytest.fixture
 def mock_request():