This returned no results.
I went ahead and added the property line to the file - However, the "Starred" option still appears after performing all the steps and rebooting.
And... I have run into this before with the "remove Recents" process. It used to work until an update from Gnome to Nautilus rolled in and no longer works no matter what I try.
My own conclusion is that the Gnome Devs really do not want users to have control.