[gnome-games/wip/exalm/cleanups: 1/3] fullscreen-box: Remove back() event

[Alexander Mikhaylenko <alexm src gnome org>]

commit e61ec9f0830dd2ac17d27fc6a7251859d798487f
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Sat Oct 20 00:55:17 2018 +0500

    fullscreen-box: Remove back() event
    
    It's a leftover from 9a99d847d961d51e10f98017fe63e10ce8c9ed4c

 src/ui/fullscreen-box.vala | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/ui/fullscreen-box.vala b/src/ui/fullscreen-box.vala
index 35226c9a..73e83f38 100644
--- a/src/ui/fullscreen-box.vala
+++ b/src/ui/fullscreen-box.vala
@@ -4,8 +4,6 @@
 private class Games.FullscreenBox : Gtk.EventBox, Gtk.Buildable {
        private const uint INACTIVITY_TIME_MILLISECONDS = 2000;
 
-       public signal void back ();
-
        public bool is_fullscreen { get; set; }
 
        private Gtk.Widget _header_bar;