remove meta so alembic doesn't require refstack
remove meta so alembic doesn't require refstack

stackforge/refstack,stackforge/refstack,openstack/refstack,markvoelker/refstack,markvoelker/refstack,openstack/refstack,stackforge/refstack,markvoelker/refstack,openstack/refstack,stackforge/refstack,openstack/refstack,markvoelker/refstack