Skips traits that aren't implemented yet.

code/modules/client/preference_setup/traits/traits.dm

@@ -7,6 +7,9 @@ var/global/list/trait_categories = list() // The categories available for the tr
 	//create a list of trait datums
 	for(var/trait_type in typesof(/datum/trait) - list(/datum/trait, /datum/trait/modifier))
 		var/datum/trait/T = new trait_type
+		if(!T.is_available())
+			qdel(T)
+			continue
 
 		if(!T.name)
 			error("Trait Menu - Missing name: [T.type]")
@@ -173,6 +176,9 @@ var/global/list/trait_categories = list() // The categories available for the tr
 
 	return result
 
+/datum/trait/proc/is_available()
+	return TRUE
+
 // Similar to above, but uses the above two procs, in one place.
 // Returns TRUE is everything is well.
 /datum/trait/proc/validate(var/list/current_traits, var/datum/category_item/player_setup_item/traits/setup)
@@ -193,4 +199,4 @@ var/global/list/trait_categories = list() // The categories available for the tr
 	for(var/trait in mind.traits)
 		var/datum/trait/T = trait_datums[trait]
 		if(istype(T))
-			T.apply_trait_post_spawn(src)
+			T.apply_trait_post_spawn(src)