How to remove the SharePoint ribbon from SharePoint 2013?

I am trying to hide the SharePoint ribbon in SharePoint 2013. I am using the Seattle.htm as my MasterPage. I did try using the

<!--MS:<SharePoint:SPSecurityTrimmedControl runat="server" AuthenticationRestrictions="AnonymousUsersOnly">-->
            <!--SPM:"><div id="ms-designer-ribbon" class="DefaultContentBlock">-->
        <!--ME:</SharePoint:SPSecurityTrimmedControl>-->

ms-designer-ribbon (I think) represents the SharePoint ribbon. I have done this in the past with SharePoint 2010 but am unable to do the same in 2013.

Any ideas?

Thanks,

Vishal