No more manage memberships, we will use NK20

users/models.py

@@ -42,31 +42,5 @@ class User(AbstractUser):
 
     @property
     def is_member(self):
-        last_year = Adhesion.objects.all().order_by(
-            'starting_in').reverse().first()
-        return last_year and self in last_year.members.all()
-
-
-class Adhesion(models.Model):
-    starting_in = models.IntegerField(
-        verbose_name=_('starting in'),
-        help_text=_('Year in which the membership year starts.'),
-        unique=True,
-    )
-    ending_in = models.IntegerField(
-        verbose_name=_('ending in'),
-        help_text=_('Year in which the membership year ends.'),
-        unique=True,
-    )
-    members = models.ManyToManyField(
-        'User',
-        verbose_name=_('members'),
-        blank=True,
-    )
-
-    class Meta:
-        verbose_name = _('membership year')
-        verbose_name_plural = _('membership years')
-
-    def __str__(self):
-        return f"{self.starting_in} - {self.ending_in}"
+        # FIXME Use NK20
+        return True