Deletes handle_random_events, saving us from 1 whole proc call in Life (#83421)

## About The Pull Request

Dumps `handle_random_events` in the bin, giving us one less proc in
`Life`, that's a free proc call optimization baby.

Replaces its only implementation with a status effect conditionally
applied when gaining / losing tox dam.

## Changelog

🆑 Melbert
refactor: Refactored the way high toxins cause you to vomit.
/🆑

code/datums/status_effects/debuffs/tox_vomit.dm

@@ -0,0 +1,23 @@
+/// Simple status effect applied when a mob has high toxins and starts to vomit regularly
+/datum/status_effect/tox_vomit
+	id = "vomitting_from_toxins"
+	tick_interval = 2 SECONDS
+	alert_type = null
+	/// Has a chance to count up every tick, until it reaches a threshold, which causes the mob to vomit and resets
+	VAR_PRIVATE/puke_counter = 0
+
+/datum/status_effect/tox_vomit/tick(seconds_between_ticks)
+	if(!AT_TOXIN_VOMIT_THRESHOLD(owner))
+		qdel(src)
+		return
+
+	if(owner.stat == DEAD || HAS_TRAIT(owner, TRAIT_STASIS))
+		return
+
+	puke_counter += SPT_PROB(30, seconds_between_ticks)
+	if(puke_counter < 50) // This is like 150 seconds apparently according to old comments
+		return
+
+	var/mob/living/carbon/human/sick_guy = owner
+	sick_guy.vomit(VOMIT_CATEGORY_DEFAULT, lost_nutrition = 20)
+	puke_counter = 0