Hide the `terminal` launcher icon for a terminal app launched from Unity dash/launcher

I have created a Unity Dash entry for neovim (using alacarte), which runs the command gnome-terminal -e nvim, and have locked it to my launcher.

When I click it, a new terminal window appears, and a new icon appears in the launcher, as shown below:

I guess it is working as expected, but is there a way I can hide the gnome-terminal launcher icon, and have the actual neovim launcher be active instead?

I found the neovim-gnome-terminal-wrapper Github project which does exactly what I need.