Remove LdapGroup in member database file

coin/members/migrations/0001_initial.py

@@ -78,15 +78,6 @@ class Migration(migrations.Migration):
             bases=(models.Model,),
         ),
         migrations.CreateModel(
-            name='LdapGroup',
-            fields=[
-            ],
-            options={
-                'managed': False,
-            },
-            bases=(models.Model,),
-        ),
-        migrations.CreateModel(
             name='LdapUser',
             fields=[
             ],