Since the removal of GTK2 code in commit 89d85cde the code
around ignore_keys is unused. See commit 1a01716a "gtk: Avoid
accel key leakage into guest on console switch" why it was only
needed for GTK2.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-5-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>