Pre-merge code cleanup

src/device/service/drivers/qkd/QKDDriver.py

src/device/service/drivers/qkd/__init__.py

...qkd/integration/test_external_qkd_retrieve_information.py

src/device/tests/qkd/unit/generated/context_pb2.py

src/device/tests/qkd/unit/generated/context_pb2_grpc.py

src/device/tests/qkd/unit/test_application_deployment.py

src/device/tests/qkd/unit/test_qkd_configuration.py

src/device/tests/qkd/unit/test_qkd_error_hanling.py

src/device/tests/qkd/unit/test_qkd_mock_connectivity.py

src/device/tests/qkd/unit/test_qkd_performance.py

src/device/tests/qkd/unit/test_qkd_security.py

src/device/tests/qkd/unit/test_qkd_subscription.py

src/device/tests/qkd/unit/test_qkd_unsubscription.py

src/device/tests/qkd/unit/test_set_new_configuration.py