Fedora removed = Greybird GTK+3 theme & LightDM GTK+ Greeter

[poma]

- removed via patch
Athmane Madjoudj <athmane at fedoraproject.org>	2012-11-10
Update to 1.0.7. Cleanup the spec.
http://pkgs.fedoraproject.org/cgit/greybird.git/commit/greybird-remove-unity-import.patch?id=2ea82cb

- still removed, but now in the 'spec'file
Athmane Madjoudj <athmane at fedoraproject.org>	2013-08-08
Update to 1.2
http://pkgs.fedoraproject.org/cgit/greybird.git/commit/greybird.spec?id=0579c58

- still removed, to this very day
nonamedotc <nonamedotc at fedoraproject.org>	2015-02-12
Update to 1.5.2
http://pkgs.fedoraproject.org/cgit/greybird.git/tree/greybird.spec?id=e881045#n68
sed -i '/lightdm-gtk-greeter\.css/d' gtk-3.0/gtk.css


What is the reason for this?