Remove use of ev_document_get_info
Remove use of ev_document_get_info

This function misbehaves with the current version of Evince and is not
required for T25706.

https://phabricator.endlessm.com/T25706

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib