Remove dead code from docdata
Remove dead code from docdata

Not needed now that Rails maps Postgresql's hstore

monofox/documentcloud,dannguyen/documentcloud,moodpo/documentcloud,ivarvong/documentcloud,Teino1978-Corp/Teino1978-Corp-documentcloud,gunjanmodi/documentcloud,roberttdev/dactyl4,monofox/documentcloud,moodpo/documentcloud,roberttdev/dactyl4,dannguyen/documentcloud,ivarvong/documentcloud,documentcloud/documentcloud,moodpo/documentcloud,moodpo/documentcloud,documentcloud/documentcloud,ivarvong/documentcloud,dannguyen/documentcloud,gunjanmodi/documentcloud,Teino1978-Corp/Teino1978-Corp-documentcloud,monofox/documentcloud,documentcloud/documentcloud,monofox/documentcloud,dannguyen/documentcloud,gunjanmodi/documentcloud,Teino1978-Corp/Teino1978-Corp-documentcloud,documentcloud/documentcloud,roberttdev/dactyl4,Teino1978-Corp/Teino1978-Corp-documentcloud,ivarvong/documentcloud,gunjanmodi/documentcloud,roberttdev/dactyl4