Turns out it's Apple's Communications Toolbox and the only way to remove it is to find its installer, copy it to a boot disk, reboot to it, run it, hold down Option, and the Install button will change to Remove.
Turns out it's Apple's Communications Toolbox and the only way to remove it is to find its installer, copy it to a boot disk, reboot to it, run it, hold down Option, and the Install button will change to Remove.