suppression import inutile

services/admin.py

@@ -5,7 +5,6 @@ from django.forms import ModelForm, BaseInlineFormSet
 from django.utils import timezone
 from django.urls import reverse
 from django.utils.html import format_html
-from django.core.mail import mail_managers
 from django.conf.urls import url
 from django.template.response import TemplateResponse
 from django.core.serializers import serialize