beanshell: [deprecation] show() in Window has been deprecated

http://docs.oracle.com/javase/1.5.0/docs/api/java/awt/Window.html#show()

Change-Id: Id02e622f3335315747e7c66724f5a3f37992e85d
Reviewed-on: https://gerrit.libreoffice.org/10481
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>