Remove useless migration

aleksis/apps/kort/migrations/0019_alter_card_managers_alter_cardlayout_managers_and_more.py

-# Generated by Django 4.2.3 on 2023-07-22 14:34
-
-import aleksis.core.managers
-from django.db import migrations, models
-import django.db.models.deletion
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('kort', '0018_card_last_read_counter'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='card',
-            name='managed_by_app_label',
-            field=models.CharField(blank=True, editable=False, max_length=255, verbose_name='App label of app responsible for managing this instance'),
-        ),
-        migrations.AddField(
-            model_name='cardlayout',
-            name='managed_by_app_label',
-            field=models.CharField(blank=True, editable=False, max_length=255, verbose_name='App label of app responsible for managing this instance'),
-        ),
-        migrations.AddField(
-            model_name='cardlayoutmediafile',
-            name='managed_by_app_label',
-            field=models.CharField(blank=True, editable=False, max_length=255, verbose_name='App label of app responsible for managing this instance'),
-        ),
-        migrations.AddField(
-            model_name='cardprinter',
-            name='managed_by_app_label',
-            field=models.CharField(blank=True, editable=False, max_length=255, verbose_name='App label of app responsible for managing this instance'),
-        ),
-        migrations.AddField(
-            model_name='cardprintjob',
-            name='managed_by_app_label',
-            field=models.CharField(blank=True, editable=False, max_length=255, verbose_name='App label of app responsible for managing this instance'),
-        ),
-    ]