[gtkmm-documentation] Remove unnecessary inclusion of gtkmm/stock.h

[Kjell Ahlstedt <kjellahl src gnome org>]

commit d3c4e25998281ec690ea0f7332fade9171737cda
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Wed Oct 9 10:40:30 2013 +0200

    Remove unnecessary inclusion of gtkmm/stock.h
    
    * examples/book/menus/popup/examplewindow.cc:
    * examples/book/recent_files/examplewindow.cc:
    Remove unnecessary #include <gtkmm/stock.h>.

 examples/book/menus/popup/examplewindow.cc  |    2 --
 examples/book/recent_files/examplewindow.cc |    1 -
 2 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/examples/book/menus/popup/examplewindow.cc b/examples/book/menus/popup/examplewindow.cc
index 63b9ef6..09552e4 100644
--- a/examples/book/menus/popup/examplewindow.cc
+++ b/examples/book/menus/popup/examplewindow.cc
@@ -15,14 +15,12 @@
  */
 
 #include "examplewindow.h"
-#include <gtkmm/stock.h>
 #include <iostream>
 
 ExampleWindow::ExampleWindow()
 : m_Box(Gtk::ORIENTATION_VERTICAL),
   m_Label("Right-click to see the popup menu."),
   m_pMenuPopup(0)
-  /* m_Image(Gtk::Stock::DIALOG_QUESTION, Gtk::ICON_SIZE_MENU) */
 {
   set_title("popup example");
   set_default_size(200, 200);
diff --git a/examples/book/recent_files/examplewindow.cc b/examples/book/recent_files/examplewindow.cc
index 69e07d0..fa9fbcc 100644
--- a/examples/book/recent_files/examplewindow.cc
+++ b/examples/book/recent_files/examplewindow.cc
@@ -17,7 +17,6 @@
  */
 
 #include "examplewindow.h"
-#include <gtkmm/stock.h>
 #include <iostream>
 
 ExampleWindow::ExampleWindow()