Simplify method of accessing form meta
Simplify method of accessing form meta

Not sure whether this was once used for something else, but at this
point this was essentially just a complicated way of getting `meta` out
fo `form_data`.

dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq