How do I remove this from SharePoint without messing up the page?

I am using the Oslo MasterPage.

```
<div id="titlerow" class="ms-dialogHidden ms-core-header ms-tableRow">

```

On my site if I delete this element with the IE Developer Tools, the page looks like this (which is what I want):

![enter image description here](https://i.stack.imgur.com/VfDHc.jpg)

However when I delete this line from the master page it looks like this?

![enter image description here](https://i.stack.imgur.com/QyERj.jpg)

Any ideas what I can do to get it to work the way I want it?