[glibmm] Remove a comment about a fixed bug.

[Murray Cumming <murrayc src gnome org>]

commit 056106bdd9cd7bccf57b5954e94d29a6db72b689
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Aug 28 10:46:57 2013 +0200

    Remove a comment about a fixed bug.

 gio/src/simpleactiongroup.hg |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/gio/src/simpleactiongroup.hg b/gio/src/simpleactiongroup.hg
index 9c72891..9055877 100644
--- a/gio/src/simpleactiongroup.hg
+++ b/gio/src/simpleactiongroup.hg
@@ -47,8 +47,6 @@ public:
   _WRAP_METHOD_DOCS_ONLY(g_simple_action_group_new)
   _WRAP_CREATE()
 
-  //See bug #https://bugzilla.gnome.org/show_bug.cgi?id=705600 about deprecating these functions in the C 
API.
-
   _WRAP_METHOD(Glib::RefPtr<Action> lookup(const Glib::ustring& action_name), g_simple_action_group_lookup, 
refreturn, deprecated "Use ActionMap::lookup_action() instead")
   _WRAP_METHOD(Glib::RefPtr<const Action> lookup(const Glib::ustring& action_name) const, 
g_simple_action_group_lookup, refreturn, constversion, deprecated "Use ActionMap::lookup_action() instead")