Update characters_database.sql

Missing line from previous commit

sql/base/characters_database.sql

@@ -507,7 +507,6 @@ DROP TABLE IF EXISTS `character_aura`;
 CREATE TABLE `character_aura` (
   `guid` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'Global Unique Identifier',
   `casterGuid` bigint(20) unsigned NOT NULL DEFAULT '0' COMMENT 'Full Global Unique Identifier',
-  `itemGuid` bigint(20) unsigned NOT NULL DEFAULT '0',
   `spell` mediumint(8) unsigned NOT NULL DEFAULT '0',
   `effectMask` tinyint(3) unsigned NOT NULL DEFAULT '0',
   `recalculateMask` tinyint(3) unsigned NOT NULL DEFAULT '0',