[gnome-usage] window: Drop the unused view_switcher_bar field

[Adrien Plazas <aplazas src gnome org>]

commit fae5fd80f4e1a25c388f9992afaf48e184760af5
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri Dec 3 11:50:08 2021 +0100

    window: Drop the unused view_switcher_bar field
    
    This avoids a compilation warning.

 src/window.vala | 3 ---
 1 file changed, 3 deletions(-)
---
diff --git a/src/window.vala b/src/window.vala
index 6eac0a3..f565d40 100644
--- a/src/window.vala
+++ b/src/window.vala
@@ -47,9 +47,6 @@ namespace Usage {
         private HeaderBarMode mode;
         private Usage.PrimaryMenu menu;
 
-        [GtkChild]
-        private unowned Hdy.ViewSwitcherBar view_switcher_bar;
-
         private View[] views;
 
         public Window(Gtk.Application application) {