gconf-settings/skel/.local/share/gnome-shell/extensions/unite@hardpixel.eu/styles/buttons-right.css

.maximized headerbar,
.maximized .titlebar {
  padding-right: 0;
}

.maximized headerbar > box.right,
.maximized .titlebar > box.right {
  margin: 0 -200px 0 0;
  opacity: 0;
}

.maximized .titlebar.default-decoration {
  margin: -200px 0 0;
  opacity: 0;
}