fix flake8

tests/app/service/send_notification/test_send_notification.py

@@ -11,7 +11,7 @@ from app.dao import notifications_dao
 from app.dao.api_key_dao import save_model_api_key
 from app.dao.services_dao import dao_update_service
 from app.dao.templates_dao import dao_get_all_templates_for_service, dao_update_template
-from app.enums import KeyType, NotificationType, TemplateProcessType, TemplateType
+from app.enums import KeyType, NotificationType, TemplateType
 from app.errors import InvalidRequest, RateLimitError
 from app.models import ApiKey, Notification, NotificationHistory, Template
 from app.service.send_notification import send_one_off_notification