How to get rid of this icon?

[voglermc]

Oops! This a fix for 4.x

Put this in additional.css

.toplinks .nonotifications a.popupctrl {
    background: none;
    padding: 3px 3px 3px 4px;
}

.toplinks .notifications a.popupctrl:hover, .toplinks .nonotifications a.popupctrl:hover, .toplinks .nonotifications a.popupctrl.active, .toplinks .notifications a.popupctrl.active {
    background: none;
    padding: 3px 3px 3px 4px;
}

.popupmenu a.popupctrl {
    background-image: none;
}