cleanup: rm generated file

Change-Id: I90a8c84c79f8f2be77b5e3fb35544aba7d232527
Signed-off-by: Manuel Bachmann <manuel.bachmann@open.eurogiciel.org>
Author:    Philippe Coval <philippe.coval@open.eurogiciel.org>
fix: prevent crash

when started as:
wlmessage  -titlebuttons Min

Change-Id: I75c9d9cf0953205a5b61f8aae7baa77341f0c5a6
Signed-off-by: Manuel Bachmann <manuel.bachmann@open.eurogiciel.org>
Author:    Philippe Coval <philippe.coval@open.eurogiciel.org>