Revert "Make add_inferred_export_properties not use pickle serializer"
Revert "Make add_inferred_export_properties not use pickle serializer"

This reverts commit bd05ee4c0532350c87ff270524c497d6d587b480.

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