Fix Skill Ice Wall in BG or pvp Woe

[Keegan]

Sorry but IMO this is a terribly game breaking change to Ice wall. This would be an extremely strong change without the ability to use it in PVP and WoE areas. Allowing this change in WoE and other PvP areas would harm the PVP/WOE that the server has. In general this change would have a negative impact on the server as a whole.