elementary: Clear module callback functions on unload
elementary: Clear module callback functions on unload

Signed-off-by: Mike McCormack <mj.mccormack@samsung.com>

SVN revision: 63958

rvandegrift/elementary,FlorentRevest/Elementary,tasn/elementary,tasn/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,tasn/elementary,tasn/elementary,FlorentRevest/Elementary,rvandegrift/elementary,tasn/elementary,rvandegrift/elementary,rvandegrift/elementary