Revert "Adds more customization to robotic internal organs (#12994)" (#13065)

code/modules/organs/organ.dm

@@ -1,6 +1,6 @@
 /obj/item/organ
 	name = "organ"
-	icon = 'icons/obj/organs/organs.dmi'
+	icon = 'icons/obj/surgery.dmi'
 	drop_sound = 'sound/items/drop/flesh.ogg'
 	pickup_sound = 'sound/items/pickup/flesh.ogg'
 	default_action_type = /datum/action/item_action/organ
@@ -31,9 +31,8 @@
 	var/robotic = 0 //For being a robot
 	var/robotize_type		// If set, this organ type will automatically be roboticized with this manufacturer.
 	var/robotic_name
-	var/robotic_sprite = TRUE
+	var/robotic_sprite
 	var/emp_coeff = 1 //coefficient for damages taken by EMP, if the organ is robotic.
-	var/model
 
 	//Lists.
 	var/list/transplant_data
@@ -364,6 +363,8 @@
 	status |= ORGAN_ASSISTED
 	if(robotic_name)
 		name = robotic_name
+	if(robotic_sprite)
+		icon_state = robotic_sprite
 
 /obj/item/organ/proc/mechassist() //Used to add things like pacemakers, etc
 	robotize()