fix(portaswitch): remove unused ArgumentException import

Author: yakimenko73

app/bss/adapters/portaswitch/adapter.py

@@ -4,7 +4,6 @@
 from datetime import datetime, timedelta, UTC
 from typing import Final, Iterator, Optional, Dict, List
 
-from docusign_esign.client.api_exception import ArgumentException
 from jose.exceptions import ExpiredSignatureError, JWTError
 
 from app_config import AppConfig