[glom] Remove some unnecessary virtuals.

[Murray Cumming <murrayc src gnome org>]

commit 55257b8ccf1fbd3ae24b20e3f389a2f0b8aee95b
Author: Murray Cumming <murrayc murrayc com>
Date:   Sun Oct 27 13:09:44 2013 +0100

    Remove some unnecessary virtuals.

 glom/mode_design/fields/box_db_table_definition.h |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/glom/mode_design/fields/box_db_table_definition.h 
b/glom/mode_design/fields/box_db_table_definition.h
index c2d26f6..6ebf0e9 100644
--- a/glom/mode_design/fields/box_db_table_definition.h
+++ b/glom/mode_design/fields/box_db_table_definition.h
@@ -49,12 +49,12 @@ private:
   bool field_has_non_unique_values(const sharedptr<const Field>& field);
 
   //Signal handlers:
-  virtual void on_adddel_add(const Gtk::TreeModel::iterator& row);
-  virtual void on_adddel_delete(const Gtk::TreeModel::iterator& rowStart, const Gtk::TreeModel::iterator& 
rowEnd);
-  virtual void on_adddel_changed(const Gtk::TreeModel::iterator& row, guint col);
-  virtual void on_adddel_edit(const Gtk::TreeModel::iterator& row);
+  void on_adddel_add(const Gtk::TreeModel::iterator& row);
+  void on_adddel_delete(const Gtk::TreeModel::iterator& rowStart, const Gtk::TreeModel::iterator& rowEnd);
+  void on_adddel_changed(const Gtk::TreeModel::iterator& row, guint col);
+  void on_adddel_edit(const Gtk::TreeModel::iterator& row);
 
-  virtual void on_Properties_apply();
+  void on_Properties_apply();
 
   bool check_field_change(const sharedptr<const Field>& field_old, const sharedptr<const Field>& field_new);