[pan2] fix bug #777711 Header Pane menu not shown when build without option --with-gnutls

[Petr Kovář <pmkovar src gnome org>]

commit a76d293d95d10cbe2bc927378e8d6c0a2eea7027
Author: Detlef Graef <detlef graef yahoo de>
Date:   Fri Mar 10 18:20:57 2017 +0100

    fix bug #777711 Header Pane menu not shown when build without option --with-gnutls

 pan/gui/pan.ui.h |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/pan/gui/pan.ui.h b/pan/gui/pan.ui.h
index 57a5efd..ef09071 100644
--- a/pan/gui/pan.ui.h
+++ b/pan/gui/pan.ui.h
@@ -40,8 +40,6 @@ const char * fallback_ui_file =
 "        <menuitem action='shorten-group-names' />\n"
 "      </menu>\n"
 "      <menu action='view-header-pane-menu'>\n"
-"        <menuitem action='toggle-expand-thread' />\n"
-"        <separator />\n"
 "        <menuitem action='thread-headers' />\n"
 "        <separator />\n"
 "        <menuitem action='enable-rules' />\n"