Fixed old ad units causing spacing issues

With the new ad unit in templates/user.hbs, these are no longer necessary. They aren't displaying but creating extra space on the followers and following pages.

**before**
![screenshot 2014-08-09 15 07 05](https://cloud.githubusercontent.com/assets/2680117/3867313/f81cd99e-1ff9-11e4-8203-1d4c99ac84ed.png)

**after**
![screenshot 2014-08-09 15 17 20](https://cloud.githubusercontent.com/assets/2680117/3867320/0d535a4a-1ffa-11e4-8442-98836259b18d.png)