diff --git a/ecs/jskult-webapp/src/services/logout_service.py b/ecs/jskult-webapp/src/services/logout_service.py
deleted file mode 100644
index 8944ccde..00000000
--- a/ecs/jskult-webapp/src/services/logout_service.py
+++ /dev/null
@@ -1,65 +0,0 @@
-# import base64
-# import hashlib
-# import hmac
-
-# import requests
-
-# from src.aws.aws_api_client import AWSAPIClient
-# from src.aws.cognito import CognitoClient
-# from src.error.exceptions import NotAuthorizeException
-# from src.model.db.user_master import UserMasterModel
-# from src.model.internal.jwt_token import JWTToken
-# from src.repositories.base_repository import BaseRepository
-# from src.repositories.user_master_repository import UserMasterRepository
-# from src.services.base_service import BaseService
-# from src.system_var import environment
-
-
-# class LogoutService(BaseService):
-#     REPOSITORIES = {
-#         'user_repository': UserMasterRepository
-#     }
-
-#     CLIENTS = {
-#         'cognito_client': CognitoClient
-#     }
-
-#     def __init__(self, repositories: dict[str, BaseRepository], clients: dict[str, AWSAPIClient]) -> None:
-#         super().__init__(repositories, clients)
-#         self.user_repository = repositories['user_repository']
-#         self.cognito_client = clients['cognito_client']
-
-#     def logout(self) -> None:
-#         logout_endpoint = f'{environment.COGNITO_AUTH_DOMAIN}/{environment.LOGOUT_ENDPOINT}'
-#         request_params = {
-#             'client_id': environment.COGNITO_CLIENT_ID,
-#             'code': code,
-#             'redirect_uri': environment.COGNITO_REDIRECT_URI
-#         }
-#         try:
-#             id_token, refresh_token = self.cognito_client.login_by_user_password_flow(
-#                 username,
-#                 password,
-#                 self.__secret_hash(username)
-#             )
-#         except Exception as e:
-#             if e.response['Error']['Code'] == 'NotAuthorizedException':
-#                 raise NotAuthorizeException(e)
-#             else:
-#                 raise e
-
-#         return JWTToken(id_token, refresh_token)
-
-#     def login_with_security_code(self, code: str) -> JWTToken:
-#         return JWTToken.request(code)
-
-#     def logged_in_user(self, user_id):
-#         user_record: UserMasterModel = self.user_repository.fetch_one({'user_id': user_id})
-#         return user_record
-
-#     def __secret_hash(self, username: str):
-#         # see - https://aws.amazon.com/jp/premiumsupport/knowledge-center/cognito-unable-to-verify-secret-hash/  # noqa
-#         message = bytes(username + environment.COGNITO_CLIENT_ID, 'utf-8')
-#         key = bytes(environment.COGNITO_CLIENT_SECRET, 'utf-8')
-#         digest = hmac.new(key, message, digestmod=hashlib.sha256).digest()
-#         return base64.b64encode(digest).decode()