zoom: remove unused args from weston_zoom_transition

Also remove the now dead code from weston_output_update_zoom().

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-By: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
1 file changed