ivi-shell: remove content_observer notification

The content observer notification struct and its
set API (ivi_layout_surface_set_content_observer)
are removed. Because they are unused.

Signed-off-by: Emre Ucan <eucan@de.adit-jv.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
3 files changed