Changelog and misc cleanup

netbox/virtualization/models.py

@@ -2,7 +2,6 @@ from __future__ import unicode_literals
 
 from django.conf import settings
 from django.contrib.contenttypes.fields import GenericRelation
-from django.contrib.postgres.fields import JSONField
 from django.core.exceptions import ValidationError
 from django.db import models
 from django.urls import reverse