Remove second instance of export links for a publication.

#5962 

Before:
![selection_102](https://cloud.githubusercontent.com/assets/4497748/2810691/6e077f20-cde2-11e3-9cab-9b4551017032.png)

After:
![selection_103](https://cloud.githubusercontent.com/assets/4497748/2810693/75b05fe4-cde2-11e3-870b-9f0405888946.png)