Remove unnecessary vertical logo background image repetition

Before:
![before](https://f.cloud.github.com/assets/61983/596565/404e06f8-cba4-11e2-8625-34076b204a58.jpg)

After:
![after](https://f.cloud.github.com/assets/61983/596567/4f53aa54-cba4-11e2-9302-c28c6d315260.jpg)