[gnome-boxes] Remove unused code

[Alexander Larsson <alexl src gnome org>]

commit 5080592da396f60a4faf75027b38cb482c2b92a3
Author: Alexander Larsson <alexl redhat com>
Date:   Thu Jun 7 18:24:37 2012 +0200

    Remove unused code
    
    https://bugzilla.gnome.org/show_bug.cgi?id=677274

 src/machine.vala |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/src/machine.vala b/src/machine.vala
index d268cda..2747808 100644
--- a/src/machine.vala
+++ b/src/machine.vala
@@ -265,11 +265,8 @@ private class Boxes.MachineActor: Boxes.UI {
     private Gtk.VBox vbox; // and the vbox under it
     private Gtk.Entry password_entry;
     private Machine machine;
-    private ulong height_id;
 
     ~MachineActor() {
-        machine.app.actor.disconnect (height_id);
-        height_id = 0;
     }
 
     public MachineActor (Machine machine) {