Deleted line that caused the sign in section of the topbar to be abnormally large

Live on https://develop.dokku.hypothes.is/ click sign in and you'll see all the tabs are crowded like this:
![hypothesis](https://f.cloud.github.com/assets/521978/2285984/a04cdc08-9fdb-11e3-9b12-e201119ab8d6.jpg)

The font-size is set too large, I deleted the line that caused this and everything is back to it's normal size.