[gnome-terminal] build: Update POTFILES.skip

[Christian Persch <chpe src gnome org>]

commit cba6d3f0e41bf3002c0c8a4455c373b37bb4dee3
Author: Christian Persch <chpe src gnome org>
Date:   Mon Feb 5 21:20:28 2018 +0100

    build: Update POTFILES.skip

 po/POTFILES.skip |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index ef7c635..e31c2ec 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -1,4 +1,5 @@
 # List of source files that should *not* be translated.
 # Please keep this file sorted alphabetically.
 org.gnome.Terminal.desktop.in
-src/gterminal.c
+src/terminal-menubar-with-mnemonics.ui
+src/terminal-menubar-without-mnemonics.ui