Remove init_timing_loop, let modules initialze themself

It's better that the modules, that knows about their own events,
initialize the events, and not let the event exeuction module load
them. It's even one step closer to letting the events.c provide an
event execution platform instead of an
naemon-dictator-handle-all-other-modules-as-puppies-module.

Signed-off-by: Max Sikstrom <msikstrom@op5.com>