DB/Item: Fix Essence of the Pure Flame scaling

By gecko32, closes #1925

sql/updates/world/2014_04_12_00_world_spell_bonus_data.sql

@@ -0,0 +1,4 @@
+--
+DELETE FROM `spell_bonus_data` WHERE `entry` = 23266;
+INSERT INTO `spell_bonus_data` (`entry`, `direct_bonus`, `dot_bonus`, `ap_bonus`, `ap_dot_bonus`, `comments`) VALUES 
+(23266, 0, 0, 0, 0, 'Item - Essence of the Pure Flame no bonus');