refactor(event): remove unused logger import from event_usecase.py

Author: ASPactores

backend/usecase/event_usecase.py

@@ -17,7 +17,6 @@
 from starlette.responses import JSONResponse
 from usecase.email_usecase import EmailUsecase
 from usecase.file_s3_usecase import FileS3Usecase
-from utils.logger import logger
 from utils.utils import Utils