[gnome-packagekit] Remove po/Makevars

[Piotr Drąg <piotrdrag src gnome org>]

commit cf4e6ee048cf11013b8b96c35efb95e71456cae0
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Fri Jan 26 16:54:42 2018 +0100

    Remove po/Makevars
    
    Damned Lies should be able to handle our po/meson.build now,
    so this workaround is no longer needed.

 po/Makevars |   78 -----------------------------------------------------------
 1 files changed, 0 insertions(+), 78 deletions(-)