There are two volume controllers (speaker icons) on the top right corner of my screen. They are located on the right of the wifi icon and to the left of the battery charging icon. I believe where all the icons are is called the "top panel". How do I get rid of one of the volume controller icons? They are identical and mimic each other.

Screenshot from 2017-04-28 10-17-56.png

Kali version: Rolling (I updated and upgraded and upgraded distro just minutes ago and sudo rebooted)
Kali installation: HDD

I have tried to do Alt+Right click, but that doesn't do anything. I've also tried Alt+Window+Right Click which also does nothing.