Making disposals mail sorting mapping less frustrating (#32218)

* mail sorting helpers && mail sorting code tweaks

- Added mail helpers
- Added defines for mail tagger locations
- FUCKED sort_type_txt

* Update mapping_helpers.dmi

* Update deltastation.dmm

* Update deltastation.dmm

* Update cerestation.dmm

* Update metastation.dmm

* Update emeraldstation.dmm

* Update boxstation.dmm

* Update boxstation.dmm

* Update mail_sorting_helpers.dm

code/modules/recycling/disposal.dm

@@ -1181,7 +1181,6 @@
 	name = "disposal sort junction"
 	icon_state = "pipe-j1s"
 	var/list/sort_type = list(1)
-	var/sort_type_txt //Look at the list called TAGGERLOCATIONS in /code/_globalvars/lists/flavor_misc.dm and cry
 	var/posdir = 0
 	var/negdir = 0
 	var/sortdir = 0
@@ -1204,37 +1203,10 @@
 /obj/structure/disposalpipe/sortjunction/Initialize(mapload)
 	. = ..()
 	updatedir()
-	if(mapload)
-		parse_sort_destinations()
 	update_appearance(UPDATE_NAME|UPDATE_DESC)
 	update()
 	return
 
-/obj/structure/disposalpipe/sortjunction/proc/parse_sort_destinations()
-	if(sort_type_txt == "1")
-		return
-
-	var/list/sort_type_str = splittext(sort_type_txt, ";")
-	var/mapping_fail
-
-	if(length(sort_type_str)) // Default to disposals if mapped with it along other destinations
-		if("1" in sort_type_str)
-			mapping_fail = "Mutually exclusive sort types in sort_type_txt"
-		else
-			var/new_sort_type = list()
-			for(var/x in sort_type_str)
-				var/n = text2num(x)
-				if(n)
-					new_sort_type |= n
-			if(length(new_sort_type))
-				sort_type = new_sort_type
-			else
-				mapping_fail = "No sort types after parsing sort_type_txt"
-	else
-		mapping_fail = "Sort_type_txt is empty"
-	if(mapping_fail)
-		stack_trace("[src] mapped incorrectly at [x],[y],[z] - [mapping_fail]")
-
 /obj/structure/disposalpipe/sortjunction/item_interaction(mob/living/user, obj/item/I, list/modifiers)
 	if(..())
 		return ITEM_INTERACT_COMPLETE