Cleanup unused loggers (components N-Z + tests) (#41982)

tests/components/modbus/test_modbus_switch.py

@@ -1,6 +1,5 @@
 """The tests for the Modbus switch component."""
 from datetime import timedelta
-import logging
 
 import pytest
 
@@ -10,8 +9,6 @@ from homeassistant.const import CONF_NAME, CONF_SLAVE, STATE_OFF, STATE_ON
 
 from .conftest import run_base_read_test, setup_base_test
 
-_LOGGER = logging.getLogger(__name__)
-
 
 @pytest.mark.parametrize(
     "regs,expected",