chore: fix lint errors in tests

Author: allenporter

tests/mqtt/test_roborock_session.py

@@ -9,7 +9,7 @@
 import pytest
 
 from roborock.mqtt.roborock_session import RoborockMqttSession, create_mqtt_session
-from roborock.mqtt.session import MqttParams, MqttSessionException, MqttSessionUnauthorized
+from roborock.mqtt.session import MqttSessionException, MqttSessionUnauthorized
 from tests import mqtt_packet
 from tests.mqtt_fixtures import FAKE_PARAMS, Subscriber