Abductor scientists can examine glands to determine what they do

🆑 coiax
add: Abductor scientists, or people who have had training similar to an
abductor's scientist will be able to examine alien glands to determine
their scientific purpose.
/🆑

Had a lot of fun making up dumb sciencey sounding explanations for the
glands.

Removes the "scientist" var from the species datum, don't need that
anymore.

TRAIT_ABDUCTOR_TRAINING and TRAIT_ABDUCTOR_SCIENTIST_TRAINING are the
important key traits here, assigned in the antag datum. Being an
abductor doesn't give you experience with all their tools, after all.

TRAIT_SURGEON (another trait the ayy scientist has) gives you access to
all surgeries, rather than a more snowflake-style species check.

code/modules/surgery/surgery.dm

@@ -88,13 +88,10 @@
 /datum/surgery/advanced/can_start(mob/user, mob/living/carbon/target)
 	if(!..())
 		return FALSE
-	//Abductor scientists need no instructions
-	if(isabductor(user))
-		var/mob/living/carbon/human/H = user
-		var/datum/species/abductor/S = H.dna.species
-		if(S.scientist)
-			return TRUE
-	
+	// True surgeons (like abductor scientists) need no instructions
+	if(user.has_trait(TRAIT_SURGEON))
+		return TRUE
+
 	if(iscyborg(user))
 		var/mob/living/silicon/robot/R = user
 		var/obj/item/surgical_processor/SP = locate() in R.module.modules
@@ -102,7 +99,7 @@
 			return FALSE
 		if(type in SP.advanced_surgeries)
 			return TRUE
-	
+
 	var/turf/T = get_turf(target)
 	var/obj/structure/table/optable/table = locate(/obj/structure/table/optable, T)
 	if(!table || !table.computer)