[gnome-desktop] Update POTFILES.in

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 7955ca169d2c2963bc307ad3f19adcbf59dc1e92
Author: Michael Catanzaro <mcatanzaro redhat com>
Date:   Fri Apr 15 08:12:43 2022 -0500

    Update POTFILES.in
    
    Also, remove a very stale comment.

 po/POTFILES.in | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index b6c3cf18..5777e673 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -1,7 +1,6 @@
 # List of source files containing translatable strings.
 # Please keep this file sorted alphabetically.
-# When adding a file here, make sure that the entry point in the API of this
-# file calls _gnome_desktop_init_i18n ()
+libgnome-desktop/gnome-desktop-thumbnail.c
 libgnome-desktop/gnome-languages.c
 libgnome-desktop/gnome-rr.c
 libgnome-desktop/gnome-rr-config.c