Disable User & Group admin

storage/admin.py

@@ -72,3 +72,9 @@ class ItemAdmin(admin.ModelAdmin):
 
 admin.site.register(Item, ItemAdmin)
 admin.site.register(Category)
+
+from django.contrib.auth.models import User
+from django.contrib.auth.models import Group
+
+admin.site.unregister(User)
+admin.site.unregister(Group)