ListView - jump list without group headers

Hello,

We want a jump list on our list view, but no group headers. Is there any way this is possible? I am using grouping to get the jump list, but can't figure out how to hide / suppress the group headers. I have tried setting the binding to "." and alternately tried creating an empty view with height zero for the group header template, but it still displays a ~25 height empty gray row. Any way to get one without the other?