astakos: Remove data part from migration 0022

A data migration was mistakenly squashed in schema migration, causing
problems with newer south versions. This data migration is not needed
in a production system, because it affects only a table introduced in
the same Synnefo version as this migration (v0.13).

snf-astakos-app/astakos/im/migrations/0022_auto__chg_field_project_id__chg_field_projectapplication_chain.py

@@ -8,9 +8,6 @@ class Migration(SchemaMigration):
 
     def forwards(self, orm):
 
-        for (c,) in orm.ProjectApplication.objects.values_list('chain').distinct():
-            orm.Chain.objects.get_or_create(chain=c)
-
         # Changing field 'Project.id'
         db.alter_column('im_project', 'id', self.gf('django.db.models.fields.related.OneToOneField')(unique=True, primary_key=True, db_column='id', to=orm['im.Chain']))