Bug 446042: Checkbox menus do not propagate 'selection changed' events.

remove deprecation warnings


Change-Id: I70dc9c7d1a23f5eaed2f51055691c2299948da24
Signed-off-by: Judith Gull <jgu@bsiag.com>
Reviewed-on: https://git.eclipse.org/r/37454
Tested-by: Hudson CI