Remove naxxramas areatrigger check to get to frostwyrm wing (no longer needed in 3.3.2).

Fixes issue #874.
Thanks Gyullo for original patch.

Still need db support for the teleport back from frostwyrm wing.

--HG--
branch : trunk

sql/FULL/world_scripts_full.sql

@@ -1450,10 +1450,6 @@ UPDATE `creature_template` SET `ScriptName`='mob_ohgan' WHERE `entry`=14988;
 
 UPDATE `creature_template` SET `ScriptName` = 'npc_skywing' WHERE `entry`=22424;
 
-DELETE FROM areatrigger_scripts WHERE `entry`=4156;
-INSERT INTO areatrigger_scripts VALUES
-   (4156,'at_naxxramas_frostwyrm_wing');
-
 DELETE FROM areatrigger_scripts WHERE `entry`=3066;
 INSERT INTO areatrigger_scripts VALUES
    (3066,'at_ravenholdt');