[gnome-shell] main: Stop handling old 'panel-main-menu' shortcut

[Marge Bot <marge-bot src gnome org>]

commit b158e9676d92e10f5b1009b197b00b82f56d2a80
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Jun 3 20:12:35 2021 +0200

    main: Stop handling old 'panel-main-menu' shortcut
    
    It's a shortcut from the GNOME 2 days that few users will remember.
    And if anyone really wants to keep it, they can use Settings to
    assign <Alt>F1 to 'toggle-overview'.
    
    
https://discourse.gnome.org/t/difference-between-show-the-overview-and-show-the-activities-overview-keyboard-shortcuts/6572
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1871>

 js/ui/main.js | 4 ----
 1 file changed, 4 deletions(-)
---
diff --git a/js/ui/main.js b/js/ui/main.js
index 549ecedd86..c7bac11f25 100644
--- a/js/ui/main.js
+++ b/js/ui/main.js
@@ -106,10 +106,6 @@ function _sessionUpdated() {
     if (sessionMode.isPrimary)
         _loadDefaultStylesheet();
 
-    wm.setCustomKeybindingHandler('panel-main-menu',
-                                  Shell.ActionMode.NORMAL |
-                                  Shell.ActionMode.OVERVIEW,
-                                  sessionMode.hasOverview ? overview.toggle.bind(overview) : null);
     wm.allowKeybinding('overlay-key', Shell.ActionMode.NORMAL |
                                       Shell.ActionMode.OVERVIEW);