Remove a useless migration

src/events/migrations/0010_event_campus.py

@@ -14,6 +14,6 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='event',
             name='campus',
-            field=models.ManyToManyField(blank=True, null=True, to='accounts.Campus'),
+            field=models.ManyToManyField(blank=True, to='accounts.Campus'),
         ),
     ]

src/events/migrations/0011_alter_event_campus.py

@@ -1,19 +0,0 @@
-# Generated by Django 3.2.11 on 2022-05-30 07:30
-
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('accounts', '0011_migration_campus'),
-        ('events', '0010_event_campus'),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name='event',
-            name='campus',
-            field=models.ManyToManyField(blank=True, to='accounts.Campus'),
-        ),
-    ]