EBookBackendFile: Report the correct error from remove_contacts()
EBookBackendFile: Report the correct error from remove_contacts()

If the EBookBackenSqliteDB reports CONTACT_NOT_FOUND, then use
E_DATA_BOOK_STATUS_CONTACT_NOT_FOUND, this causes test-client-remove-contact
to pass again.

See bug: https://bugzilla.gnome.org/show_bug.cgi?id=694188

matzipan/evolution-data-server,tintou/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,matzipan/evolution-data-server,tintou/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,tintou/evolution-data-server,tintou/evolution-data-server,Distrotech/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server