[gtkmm] Gtk::RecentManager: Remove unused SlotChanged

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 66c69026c566238ec2f90e21a8841b23a60fe74c
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Fri Mar 10 15:18:20 2017 +0100

    Gtk::RecentManager: Remove unused SlotChanged

 gtk/src/recentmanager.hg |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/gtk/src/recentmanager.hg b/gtk/src/recentmanager.hg
index 3a7d287..b4232f6 100644
--- a/gtk/src/recentmanager.hg
+++ b/gtk/src/recentmanager.hg
@@ -127,10 +127,6 @@ public:
 
   _WRAP_METHOD(int purge_items(), gtk_recent_manager_purge_items, errthrow)
 
-  //TODO: Who needs this typedef? Remove when we can break API?
-  /// For instance, void on_changed();
-  typedef sigc::slot<void()> SlotChanged;
-
   _WRAP_SIGNAL(void changed(), "changed")
 
   _WRAP_PROPERTY("filename", Glib::ustring)