removes the B.E.P.I.S. (shiptest-ss13#3414)

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## About The Pull Request
Removes the BEPIS and related tech nodes. 
Removes BEPIS disks from salvage and maps (just the tranq as of now)
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## Why It's Good For The Game
BEPIS is slated to be removed in the cargo rework doc, here it is.
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## Changelog

:cl:
del: B.E.P.I.S. and related tech nodes.
/:cl:

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_maps/shuttles/independent/independent_tranquility.dmm

@@ -6540,10 +6540,6 @@
 /obj/effect/turf_decal/techfloor{
 	dir = 1
 	},
-/obj/item/disk/tech_disk/major{
-	pixel_x = -7;
-	pixel_y = -5
-	},
 /obj/item/disk/tech_disk{
 	pixel_x = -3;
 	pixel_y = -2

code/controllers/subsystem/research.dm

@@ -23,7 +23,6 @@ SUBSYSTEM_DEF(research)
 	var/list/techweb_categories = list()		//category name = list(node.id = TRUE)
 	var/list/techweb_boost_items = list()		//associative double-layer path = list(id = list(point_type = point_discount))
 	var/list/techweb_nodes_hidden = list()		//Node ids that should be hidden by default.
-	var/list/techweb_nodes_experimental = list()	//Node ids that are exclusive to the BEPIS.
 	var/list/techweb_point_items = list(
 		//path = list(point type = value)
 		/obj/item/assembly/signaler/anomaly = list(TECHWEB_POINT_TYPE_GENERIC = 10000)
@@ -217,8 +216,6 @@ SUBSYSTEM_DEF(research)
 			D.unlocked_by += node.id
 		if(node.hidden)
 			techweb_nodes_hidden[node.id] = TRUE
-		if(node.experimental)
-			techweb_nodes_experimental[node.id] = TRUE
 		CHECK_TICK
 	generate_techweb_unlock_linking()
 

code/game/objects/items/circuitboards/machine_circuitboards.dm

@@ -1114,17 +1114,6 @@
 		/obj/item/stack/sheet/glass = 1)
 	def_components = list(/obj/item/stack/ore/bluespace_crystal = /obj/item/stack/ore/bluespace_crystal/artificial)
 
-/obj/item/circuitboard/machine/bepis
-	name = "BEPIS Chamber (Machine Board)"
-	icon_state = "science"
-	build_path = /obj/machinery/rnd/bepis
-	req_components = list(
-		/obj/item/stack/cable_coil = 5,
-		/obj/item/stock_parts/capacitor = 1,
-		/obj/item/stock_parts/manipulator = 1,
-		/obj/item/stock_parts/micro_laser = 1,
-		/obj/item/stock_parts/scanning_module = 1)
-
 /obj/item/circuitboard/machine/bluespace_miner
 	name = "Bluespace Miner (Machine Board)"
 	build_path = /obj/machinery/power/bluespace_miner

code/game/objects/structures/salvaging.dm

@@ -242,7 +242,6 @@
 		/obj/item/research_notes/loot/medium = 20,
 		/obj/item/research_notes/loot/big = 5, //you have a chance at summoning god damn ripley lobster from this thing, might as well
 
-		/obj/item/disk/tech_disk/major = 3,
 		/obj/item/disk/tech_disk = 20,
 		/obj/item/disk/data = 20,
 		/obj/item/disk/holodisk = 20,
@@ -303,7 +302,6 @@
 		/obj/item/research_notes/loot/medium = 20,
 		/obj/item/research_notes/loot/big = 5,
 
-		/obj/item/disk/tech_disk/major = 3,
 		/obj/item/disk/tech_disk = 20,
 		/obj/item/disk/data = 20,
 		/obj/item/disk/holodisk = 20,
@@ -591,7 +589,6 @@
 /obj/effect/spawner/lootdrop/random_machine_circuit_common
 	loot = list(
 			/obj/item/circuitboard/machine/autolathe = 5,
-			/obj/item/circuitboard/machine/bepis = 5,
 			/obj/item/circuitboard/machine/biogenerator = 5,
 			/obj/item/circuitboard/machine/cell_charger = 5,
 			/obj/item/circuitboard/machine/chem_heater = 5,

code/modules/autowiki/pages/techweb.dm

@@ -9,9 +9,6 @@
 		if (!node.show_on_wiki)
 			continue
 
-		if (!valid_node(node))
-			continue
-
 		output += "\n\n" + include_template("Autowiki/TechwebEntry", list(
 			"name" = escape_value(node.display_name),
 			"description" = escape_value(node.description),
@@ -21,9 +18,6 @@
 
 	return output
 
-/datum/autowiki/techweb/proc/valid_node(datum/techweb_node/node)
-	return !node.experimental
-
 /datum/autowiki/techweb/proc/generate_designs(list/design_ids)
 	var/output = ""
 
@@ -50,9 +44,6 @@
 /datum/autowiki/techweb/experimental
 	page = "Template:Autowiki/Content/Techweb/Experimental"
 
-/datum/autowiki/techweb/experimental/valid_node(datum/techweb_node/node)
-	return node.experimental
-
 /proc/sort_research_nodes(node_id_a, node_id_b)
 	var/datum/techweb_node/node_a = SSresearch.techweb_nodes[node_id_a]
 	var/datum/techweb_node/node_b = SSresearch.techweb_nodes[node_id_b]

code/modules/research/designs/machine_designs.dm

@@ -238,14 +238,6 @@
 	category = list("Research Machinery")
 	departmental_flags = DEPARTMENTAL_FLAG_SCIENCE
 
-/datum/design/board/bepis
-	name = "Machine Design (B.E.P.I.S. Board)"
-	desc = "The circuit board for a B.E.P.I.S."
-	id = "bepis"
-	build_path = /obj/item/circuitboard/machine/bepis
-	category = list("Research Machinery")
-	departmental_flags = DEPARTMENTAL_FLAG_SCIENCE | DEPARTMENTAL_FLAG_CARGO
-
 /datum/design/board/rdserver
 	name = "Machine Design (R&D Server Board)"
 	desc = "The circuit board for an R&D Server."