Clears out a double railing on the wizard den/ragin' mages maps (tgst…

…ation#86595)

## About The Pull Request

This removes an erroneous double railing from the wizard den.


![image](https://github.com/user-attachments/assets/60e20adb-1775-4c4e-ae16-5b9075d9cba7)

I discovered this while experimenting with changing the ragin' mages map
(shortly before giving up on the idea). Since the map is a carbon copy
of the actual den, I check and, wouldn't you know it, the error was on
the OG den too.
## Why It's Good For The Game

One railing is enough. Two is completely absurd.
## Changelog
:cl: Rhials
fix: Removes some doubled-up railings on the wizard den/ragin' mages
shuttle.
/:cl:

_maps/deathmatch/ragin_mages.dmm

@@ -479,9 +479,6 @@
 /turf/open/floor/engine/cult,
 /area/deathmatch)
 "DK" = (
-/obj/structure/railing{
-	dir = 8
-	},
 /obj/structure/railing{
 	dir = 8
 	},

_maps/templates/lazy_templates/wizard_den.dmm

@@ -665,9 +665,6 @@
 /turf/open/floor/engine/cult,
 /area/centcom/wizard_station)
 "KL" = (
-/obj/structure/railing{
-	dir = 8
-	},
 /obj/structure/railing{
 	dir = 8
 	},