It looks like the link is added via the Iconified Header Links theme component. The component has a way for you to decide if an icon appears on desktops, mobiles or both. The icon you have is set to appear on both.
In the theme settings, you need to change
vdm or view desktop mobile to
vdo or view desktop only.
If you’re still not sure, have a look at the theme settings section of the theme’s topic.