NPCs will not use Body of Stone because they are too dumb to use it well

git-svn-id: http://svn.net-core.org/repos/t-engine4@4522 51575b47-30f0-44d4-a5cc-537603b46e54

game/modules/tome/data/talents/spells/stone.lua

@@ -77,6 +77,7 @@ newTalent{
 	mode = "sustained",
 	sustain_mana = 70,
 	cooldown = 12,
+	no_npc_use = true,
 	tactical = { BUFF = 2 },
 	getFireRes = function(self, t) return self:combatTalentSpellDamage(t, 5, 80) end,
 	getLightningRes = function(self, t) return self:combatTalentSpellDamage(t, 5, 50) end,