eo: remove EFL_EVENT_SPECIAL_SKIP.
EFL_EVENT_SPECIAL_SKIP has been defined to 1 for a long time and there
wasn't a way to disable it at all. There is no reason to not use it at
all, so here we go. This was default, now it is without useless code.
Reviewed-by: Derek Foreman <email@example.com>
Reviewed-by: Xavi Artigas <firstname.lastname@example.org>
Differential Revision: https://phab.enlightenment.org/D7743