How to stop Gmail from showing "All Mail"

[betachains]

On my new Nexus 7, Gmail shows the "All Mail" tab on the left-side menu. I know that once someone gets hold of my phone in an unlocked state, they have access to all my email anyways. I am thinking more about turning around for 20 seconds, and some busybody can see a list of all my recent email headers with just one touch.

Is there a way to remove this and some other tabs from the Gmail home screen? I've flip through all the Settings options but nothing obvious shows up.

Thanks.