DB/Misc: remove one startup error

sql/updates/world/2016_01_22_04_world.sql

@@ -0,0 +1,3 @@
+-- Tomb of the Lightbringer
+-- This quest was marked obsolete by Blizzard and cannot be obtained or completed.
+UPDATE `creature_template` SET `ScriptName`='' WHERE `entry`=17238;