remove unused variable

diff --git a/gtk2_ardour/editor_route_groups.cc b/gtk2_ardour/editor_route_groups.cc
index 377e58ccf8f986c9e4a972e2e5a2915c607a2c2d..d85335fd421a749aa9b3cd5d1e22a296ba4bba96 100644 (file)
--- a/gtk2_ardour/editor_route_groups.cc
+++ b/gtk2_ardour/editor_route_groups.cc
@@ -551,8 +551,6 @@ EditorRouteGroups::set_session (Session* s)
 
        if (_session) {
 
-               RouteGroup& arg (_session->all_route_group());
-
                _session->route_group_added.connect (_session_connections, MISSING_INVALIDATOR, boost::bind (&EditorRouteGroups::add, this, _1), gui_context());
                _session->route_group_removed.connect (
                        _session_connections, MISSING_INVALIDATOR, boost::bind (&EditorRouteGroups::groups_changed, this), gui_context()