fix(Core/AI): remove an unused variable in ScriptedAI (#19816)

fix(Core/AI): remove an unused variable

src/server/game/AI/ScriptedAI/ScriptedCreature.cpp

@@ -190,8 +190,7 @@ bool SummonList::IsAnyCreatureInCombat() const
 }
 
 ScriptedAI::ScriptedAI(Creature* creature) : CreatureAI(creature),
-    me(creature),
-    IsFleeing(false)
+    me(creature)
 {
     _isHeroic = me->GetMap()->IsHeroic();
     _difficulty = Difficulty(me->GetMap()->GetSpawnMode());

src/server/game/AI/ScriptedAI/ScriptedCreature.h

@@ -279,9 +279,6 @@ struct ScriptedAI : public CreatureAI
     //Pointer to creature we are manipulating
     Creature* me;
 
-    //For fleeing
-    bool IsFleeing;
-
     // *************
     //Pure virtual functions
     // *************