I popped into your account and made a copy of the mailing you were working on.
It looks like that bar is a hard-coded text-box built into the template itself, so there isn't a way to remove it.
It is called the "Tagline Bar", and you CAN make it invisible if you'd like.
Simply click the "Tagline Bar" button at the top, then the background color swatch, and choose the option in the top-left with the red line through it. That will make the bar invisible, though the space for it will still be there in the mailing.
If you'd like to customize the template beyond the options given in the editor, you can reach out to our design team via the design request form: http://myemma.com/design-revisions