Removes override of dc.title during mods->dc transform.

This removes the step in the mods->dc transofrm which was overriding dc.title with
object label. This was preventing mods title part number, subtitle, etc from being
included in the dc.title.
Merge pull request #1 from lyrasis/update-mods-dc-transform

Removes override of dc.title during mods->dc transform.