[gnome-boxes] POTFILES: Remove workaround for intltool bug

[Felipe Borges <felipeborges src gnome org>]

commit 3ea12f2d30126ac7c6199bf695228b0382c72849
Author: Debarshi Ray <debarshir gnome org>
Date:   Wed Aug 16 17:21:35 2017 +0200

    POTFILES: Remove workaround for intltool bug
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783832

 po/POTFILES.skip |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index 078958d..77e42ae 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -1,8 +1,6 @@
 # List of source files that should *not* be translated.
 # Please keep this file sorted alphabetically.
 data/org.gnome.Boxes.desktop.in
-# Have to list it twice because of a intltool bug
-sub/data/org.gnome.Boxes.desktop.in
 src/actions-popover.c
 src/app.c
 src/app-window.c