Remove superfluous field "absence_reason" of Event model

aleksis/apps/chronos/migrations/0012_event_remove_absence_reason.py

+# Generated by Django 3.0.5 on 2020-04-13 16:07
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('chronos', '0011_absence_for_groups_and_rooms'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='event',
+            name='absence_reason',
+        ),
+    ]

aleksis/apps/chronos/models.py

@@ -830,7 +830,7 @@ class Event(ExtensibleModel):
     title = models.CharField(verbose_name=_("Title"), max_length=50)
     date_start = models.DateField(verbose_name=_("Effective start date of event"), null=True)
     date_end = models.DateField(verbose_name=_("Effective end date of event"), null=True)
-    absence_reason = models.ForeignKey("AbsenceReason", on_delete=models.CASCADE, related_name="absence_reason", verbose_name=_("Absence reason"))
+
     period_from = models.ForeignKey("TimePeriod", on_delete=models.CASCADE, verbose_name=_("Effective start period of event"), related_name="+")
     period_to = models.ForeignKey("TimePeriod", on_delete=models.CASCADE, verbose_name=_("Effective end period of event"), related_name="+")