removed var digestion_ratio (#19114)

code/modules/mob/living/carbon/carbon.dm

@@ -1086,7 +1086,7 @@ GLOBAL_LIST_INIT(ventcrawl_machinery, list(/obj/machinery/atmospherics/unary/ven
 	var/fullness = nutrition + 10
 	if(istype(toEat, /obj/item/reagent_containers/food/snacks))
 		for(var/datum/reagent/consumable/C in reagents.reagent_list) //we add the nutrition value of what we're currently digesting
-			fullness += C.nutriment_factor * C.volume / (C.metabolization_rate * metabolism_efficiency * digestion_ratio)
+			fullness += C.nutriment_factor * C.volume / (C.metabolization_rate * metabolism_efficiency)
 	if(user == src)
 		if(istype(toEat, /obj/item/reagent_containers/food/drinks))
 			if(!selfDrink(toEat))

code/modules/mob/living/carbon/human/human.dm

@@ -1295,7 +1295,6 @@
 		add_language(dna.species.default_language)
 
 	hunger_drain = dna.species.hunger_drain
-	digestion_ratio = dna.species.digestion_ratio
 
 	if(dna.species.base_color && use_default_color)
 		//Apply colour.

code/modules/mob/living/carbon/human/species/_species.dm

@@ -34,7 +34,6 @@
 	var/body_temperature = 310.15	//non-IS_SYNTHETIC species will try to stabilize at this temperature. (also affects temperature processing)
 	var/reagent_tag                 //Used for metabolizing reagents.
 	var/hunger_drain = HUNGER_FACTOR
-	var/digestion_ratio = 1 //How quickly the species digests/absorbs reagents.
 	var/taste_sensitivity = TASTE_SENSITIVITY_NORMAL //the most widely used factor; humans use a different one
 	var/hunger_icon = 'icons/mob/screen_hunger.dmi'
 	var/hunger_type

code/modules/mob/living/living_defines.dm

@@ -38,7 +38,6 @@
 	// What type of mob is this
 	var/mob_biotypes = MOB_ORGANIC
 	var/metabolism_efficiency = 1 //more or less efficiency to metabolize helpful/harmful reagents and regulate body temperature..
-	var/digestion_ratio = 1 //controls how quickly reagents metabolize; largely governered by species attributes.
 
 	var/holder = null //The holder for blood crawling