Remove default values for computed fields

models/calendar.py

@@ -36,12 +36,10 @@ class CalendarEvent(models.Model):
         string="Tâche liée")
     is_transfered = fields.Boolean(
         string='Transféré',
-        compute='_compute_is_transfered',
-        default=False)
+        compute='_compute_is_transfered')
     is_attendee = fields.Boolean(
         string='Est participant',
-        compute='_compute_is_attendee',
-        default=False)
+        compute='_compute_is_attendee')
 
     # ------------------------------------------------------
     # Compute