Remove title separator line for freedom of information addresses

Linked to Zendesk ticket: https://govuk.zendesk.com/agent/tickets/873595

Before:

![screen shot 2014-11-14 at 12 32 24](https://cloud.githubusercontent.com/assets/5455804/5046701/748df934-6c05-11e4-8261-1cbd14a6c408.png)

After:

![screen shot 2014-11-14 at 13 34 58](https://cloud.githubusercontent.com/assets/5455804/5046716/a5e61e6c-6c05-11e4-8adb-3b42dda76179.png)