[fractal/potfiles-skip] Add POTFILES.skip with i18n module

[Daniel Garcia Moreno <danigm src gnome org>]

commit e63ad34697678ef73412c1d4a4c6b10bb4445fa9
Author: Daniel García Moreno <dani danigm net>
Date:   Mon Jan 4 08:41:08 2021 +0100

    Add POTFILES.skip with i18n module

 fractal-gtk/po/POTFILES.in   | 1 -
 fractal-gtk/po/POTFILES.skip | 3 +++
 2 files changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/fractal-gtk/po/POTFILES.in b/fractal-gtk/po/POTFILES.in
index dffa7fa2..1779f6b9 100644
--- a/fractal-gtk/po/POTFILES.in
+++ b/fractal-gtk/po/POTFILES.in
@@ -114,7 +114,6 @@ fractal-gtk/src/ui/room_settings.rs
 fractal-gtk/src/ui/start_chat.rs
 fractal-gtk/src/ui/state.rs
 fractal-gtk/src/ui/user.rs
-fractal-gtk/src/util/i18n.rs
 fractal-gtk/src/util/mod.rs
 fractal-gtk/src/widgets/address.rs
 fractal-gtk/src/widgets/autocomplete.rs
diff --git a/fractal-gtk/po/POTFILES.skip b/fractal-gtk/po/POTFILES.skip
new file mode 100644
index 00000000..2541687d
--- /dev/null
+++ b/fractal-gtk/po/POTFILES.skip
@@ -0,0 +1,3 @@
+# These are files that we don't want to translate
+# Please keep this file sorted alphabetically.
+fractal-gtk/src/util/i18n.rs