[PATCH] GUI: no need to unregister input device if list is destroyed

[PATCH] GUI: no need to unregister input device if list is destroyed

Fixes: QTBUG-133776
Change-Id: If4a148e3ebf753ccd661a5ed1b321dbd7751576e
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Liang Qi <liang.qi@qt.io>
(cherry picked from commit 1040728e39b8b898d6e96b79a4c7bfcd0cb3f027)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit 6ad615cd1218a9b7f4204c04288ae2d6ed6c232b)

Gbp-Pq: Name upstream_prevent_unregistering_input_device.diff