Alchemists can not loose Create Alchemist Gems by unlearning Extract Gem

git-svn-id: http://svn.net-core.org/repos/t-engine4@6336 51575b47-30f0-44d4-a5cc-537603b46e54

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

@@ -72,14 +72,10 @@ newTalent{
 	no_npc_use = true,
 	no_unlearn_last = true,
 	on_learn = function(self, t)
-		if not self:knowTalent(self.T_CREATE_ALCHEMIST_GEMS) then
-			self:learnTalent(self.T_CREATE_ALCHEMIST_GEMS, true)
-		end
+		self:learnTalent(self.T_CREATE_ALCHEMIST_GEMS, true)
 	end,
 	on_unlearn = function(self, t)
-		if self:getTalentLevelRaw(t) == 0 and self:knowTalent(self.T_CREATE_ALCHEMIST_GEMS) then
-			self:unlearnTalent(self.T_CREATE_ALCHEMIST_GEMS)
-		end
+		self:unlearnTalent(self.T_CREATE_ALCHEMIST_GEMS)
 	end,
 	filterGem = function(self, t, o) return o.metallic and (o.material_level or 1) <= self:getTalentLevelRaw(t) end,
 	getGem = function(self, t, o)