refactor: clean up Setting model and update migration dependencies

Signed-off-by: Michal Fiedorowicz <mfiedorowicz@netboxlabs.com>

Author: mfiedorowicz

netbox_diode_plugin/migrations/0007_setting_model_cleanup.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+# Copyright 2025 NetBox Labs, Inc.
+"""Diode NetBox Plugin - Database migrations."""
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    """Clean up Setting model by removing unused fields."""
+
+    dependencies = [
+        ("netbox_diode_plugin", "0006_clientcredentials_alter_setting_diode_target"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="setting",
+            name="custom_field_data",
+        ),
+        migrations.RemoveField(
+            model_name='setting',
+            name='created',
+        ),
+        migrations.RemoveField(
+            model_name='setting',
+            name='last_updated',
+        ),
+    ]

netbox_diode_plugin/migrations/0007_setting_branch.py renamed to netbox_diode_plugin/migrations/0008_setting_branch.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 # Copyright 2025 NetBox Labs, Inc.
-"""Add branch_id field to Setting model."""
+"""Diode NetBox Plugin - Database migrations."""
 
 from django.db import migrations, models
 
@@ -9,7 +9,7 @@ class Migration(migrations.Migration):
     """Add optional branch_id field to Setting model."""
 
     dependencies = [
-        ("netbox_diode_plugin", "0006_clientcredentials_alter_setting_diode_target"),
+        ("netbox_diode_plugin", "0007_setting_model_cleanup"),
     ]
 
     operations = [