Suppression d'un champ inutile

cotisations/payment_methods/mixins.py

@@ -1,15 +1,5 @@
-from django.db import models
-
-from cotisations.models import Paiement
-
-
 class PaymentMethodMixin:
     """The base class for payment models. They should inherit from this."""
-    payment = models.OneToOneField(
-        Paiement,
-        related_name='payment_method',
-        editable=False
-    )
 
     def end_payment(self, invoice, request):
         """Redefine this method in order to get a different ending to the