[gnome-control-center] Update POTFILES.skip

[Piotr Drąg <piotrdrag src gnome org>]

commit 765c67ff155658532e9736a0c59deb3f047435fe
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Tue Feb 5 18:38:23 2019 +0100

    Update POTFILES.skip

 po/POTFILES.skip | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index dfa39b51e..d320d9b73 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -1,16 +1,4 @@
 # List of source files that should *not* be translated.
 # Please keep this file sorted alphabetically.
 panels/user-accounts/fingerprint-strings.h
-subprojects/libhandy/examples/example-window.ui
-subprojects/libhandy/src/hdy-action-row.c
-subprojects/libhandy/src/hdy-arrows.c
-subprojects/libhandy/src/hdy-column.c
-subprojects/libhandy/src/hdy-combo-row.c
-subprojects/libhandy/src/hdy-dialer-button.c
-subprojects/libhandy/src/hdy-dialer.c
-subprojects/libhandy/src/hdy-dialer-cycle-button.c
-subprojects/libhandy/src/hdy-expander-row.c
-subprojects/libhandy/src/hdy-header-group.c
-subprojects/libhandy/src/hdy-leaflet.c
-subprojects/libhandy/src/hdy-search-bar.c
-subprojects/libhandy/src/hdy-title-bar.c
+subprojects/libhandy