hiding the element isn't hard, its replacing it that proves a challange.
to hide the element add this to your sass:
.mx-listview > ul.mx-list.mx-list-striped.mx-listview-list > li.mx-listview-empty {
display: none
}
I did a work around with this, that text that says "No Items Found" has a class associated with it, I believe it is .mx-list-empty or something similar to this. I set the color of the text to transparent, so that "No Items Found" would not appear. it is just a workaround, but it works for me, hopefully it helps.