Remove 2 of 3 types of 'get_saved_export'
Remove 2 of 3 types of 'get_saved_export'

There are 3 different signatures of this method in this file - one which
accepts domain and schema ID, one which accepts domain, app_id, and
identifier, and an SMS one that looks like it should match the first,
but accepts domain and a boolean

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