status: Remove settings actions

These aren't used in the new system status designs.

This is a part of the new system status design, see
https://wiki.gnome.org/GnomeShell/Design/Guidelines/SystemStatus/
for design details.

https://bugzilla.gnome.org/show_bug.cgi?id=704368

js/ui/status/keyboard.js

@@ -398,8 +398,6 @@ const InputSourceIndicator = new Lang.Class({
         Main.sessionMode.connect('updated', Lang.bind(this, this._sessionUpdated));
         this._sessionUpdated();
 
-        this.menu.addSettingsAction(_("Region & Language Settings"), 'gnome-region-panel.desktop');
-
         this._sourcesPerWindow = false;
         this._focusWindowNotifyId = 0;
         this._overviewShowingId = 0;