fixe multiple select size

In the protostar template there is CSS in `template.css`

```css
.select[multiple],
select[size] {
	height: 28px;
}
```

This is result in 

![im2](http://serhioromano.s3.amazonaws.com/tmp/Screen Shot 2012-10-02 at 7.11.35 PM.png)

instead of

![im1](http://serhioromano.s3.amazonaws.com/tmp/Screen Shot 2012-10-02 at 7.12.22 PM.png)

I think if select is multiple, it is ok if it accept the size by `size="5"` attribute

I have deleted this part from the template.