sound: Make the level bar draw correctly again

The patch in
http://git.gnome.org/browse/gnome-media/commit/?id=5b71e80a54faf7bc8172bddccd74e2688435e571
was broken, as it didn't remove the translation that used to be
necessary when using ->expose_event, but not with ->draw.

panels/sound/gvc-level-bar.c

@@ -568,19 +568,11 @@ gvc_level_bar_draw (GtkWidget *widget,
                     cairo_t   *cr)
 {
         GvcLevelBar     *bar;
-        GtkAllocation   allocation;
 
         g_return_val_if_fail (GVC_IS_LEVEL_BAR (widget), FALSE);
 
-        g_message ("gvc_level_bar_draw");
-
         bar = GVC_LEVEL_BAR (widget);
 
-        gtk_widget_get_allocation (widget, &allocation);
-        cairo_translate (cr,
-                         allocation.x,
-                         allocation.y);
-
         if (bar->priv->orientation == GTK_ORIENTATION_VERTICAL) {
                 int i;
                 int by;