Removes CPU, Sensors and Identify ModPC parts. (#66924)

Removes CPU, Sensors and Identify parts from modulra computers.
This is in effort to simplify how tablets and tablet apps are, while removing barriers to download specific apps. Limiting apps needed for your job, through hardware, is a terrible idea, and just limits departmental stuff to being there roundstart/latejoin, punishing people who job change through the in-game HoP system, devaluing the job as a whole.

code/modules/modular_computers/computers/item/computer_ui.dm

@@ -108,7 +108,7 @@
 	data["has_light"] = has_light
 	data["light_on"] = light_on
 	data["comp_light_color"] = comp_light_color
-	data["pai"] = pai
+	data["pai"] = inserted_pai
 	return data
 
 
@@ -128,7 +128,7 @@
 			return TRUE
 		if("PC_minimize")
 			var/mob/user = usr
-			if(!active_program || !all_components[MC_CPU])
+			if(!active_program)
 				return
 
 			idle_threads.Add(active_program)
@@ -179,9 +179,7 @@
 				update_appearance()
 				return
 
-			var/obj/item/computer_hardware/processor_unit/PU = all_components[MC_CPU]
-
-			if(idle_threads.len > PU.max_idle_programs)
+			if(idle_threads.len > max_idle_programs)
 				to_chat(user, span_danger("\The [src] displays a \"Maximal CPU load reached. Unable to run another program.\" error."))
 				return
 
@@ -240,26 +238,24 @@
 						playsound(src, 'sound/machines/card_slide.ogg', 50)
 		if("PC_Imprint_ID")
 			var/obj/item/computer_hardware/card_slot/cardholder = all_components[MC_CARD]
-			var/obj/item/computer_hardware/identifier/id_hardware = all_components[MC_IDENTIFY]
 			if(!cardholder)
 				return
 
 			saved_identification = cardholder.current_identification
 			saved_job = cardholder.current_job
 
-			if(id_hardware)
-				id_hardware.UpdateDisplay()
+			UpdateDisplay()
 
 			playsound(src, 'sound/machines/terminal_processing.ogg', 15, TRUE)
 		if("PC_Pai_Interact")
 			switch(params["option"])
 				if("eject")
-					usr.put_in_hands(pai)
-					pai.slotted = FALSE
-					pai = null
-					to_chat(usr, span_notice("You remove the pAI from the [name]."))
+					usr.put_in_hands(inserted_pai)
+					to_chat(usr, span_notice("You remove [inserted_pai] from the [name]."))
+					inserted_pai.slotted = FALSE
+					inserted_pai = null
 				if("interact")
-					pai.attack_self(usr)
+					inserted_pai.attack_self(usr)
 			return UI_UPDATE
 		else
 			return