Remove liquid level checks

Author: FabianK3

code/modules/reagents/reagent_containers.dm

@@ -350,13 +350,8 @@
 	var/trans = reagents.trans_to(target, amount_per_transfer_from_this)
 	to_chat(user, SPAN_NOTICE("You transfer [trans] units of the solution to [target]."))
 	on_pour()
-	if (istype(target, /obj/item/reagent_containers))
-		var/obj/item/reagent_containers/container = target
-		container.on_receiving_pour()
 	return 1
 
 /obj/item/reagent_containers/proc/on_pour()
 	playsound(src, /singleton/sound_category/generic_pour_sound, 25, 1)
 
-/obj/item/reagent_containers/proc/on_receiving_pour()
-	return

code/modules/reagents/reagent_containers/food/cans.dm

@@ -27,27 +27,6 @@
 	. += "If it's empty, you can crush it on your forehead by selecting your head and clicking on yourself with harm intent."
 	. += "You can also crush cans on other people's foreheads as well."
 
-/obj/item/reagent_containers/food/drinks/cans/standard_feed_mob(var/mob/user, var/mob/living/target)
-	..()
-	if(reagents && reagents.total_volume > 0) // Handle trash persistency when drinking
-		persistency_considered_trash = TRUE
-	else
-		persistency_considered_trash = FALSE
-
-/obj/item/reagent_containers/food/drinks/cans/standard_pour_into(var/mob/user, var/atom/target)
-	..()
-	if(reagents && reagents.total_volume > 0) // Handle trash persistency when pouring out
-		persistency_considered_trash = TRUE
-	else
-		persistency_considered_trash = FALSE
-
-/obj/item/reagent_containers/food/drinks/cans/on_receiving_pour()
-	..()
-	if(reagents && reagents.total_volume > 0) // Handle trash persistency when receiving new liquid
-		persistency_considered_trash = TRUE
-	else
-		persistency_considered_trash = FALSE
-
 /obj/item/reagent_containers/food/drinks/cans/persistence_get_content()
 	var/list/content = list()
 	content["name"] = name