[gnome-games] display-box: Remove unused timeout id

[Alexander Mikhaylenko <alexm src gnome org>]

commit 2ecdd78198531c33624ed8f456233366f516cbd1
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Thu Aug 22 02:12:08 2019 +0500

    display-box: Remove unused timeout id
    
    All the timeout logic was moved into FullscreenBox, this is a leftover.

 src/ui/display-box.vala | 5 -----
 1 file changed, 5 deletions(-)
---
diff --git a/src/ui/display-box.vala b/src/ui/display-box.vala
index 7324eebb..8de6f4d2 100644
--- a/src/ui/display-box.vala
+++ b/src/ui/display-box.vala
@@ -73,11 +73,6 @@ private class Games.DisplayBox : Gtk.Bin {
        private SavestatesList savestates_list;
 
        private int fullscreen_header_bar_height;
-       private long timeout_id;
-
-       construct {
-               timeout_id = -1;
-       }
 
        public DisplayBox (SavestatesListState savestates_list_state) {
                Object (savestates_list_state: savestates_list_state);