Core/AI Remove Reset() call from JustRespawned() hook

* Not needed, and causes trouble when using _DespawnAtEvade()
* Closes #16786

src/server/game/AI/CreatureAI.h

@@ -137,8 +137,8 @@ class CreatureAI : public UnitAI
         virtual void AttackedBy(Unit* /*attacker*/) { }
         virtual bool IsEscorted() const { return false; }
 
-        // Called when creature is spawned or respawned (for reseting variables)
-        virtual void JustRespawned() { Reset(); }
+        // Called when creature is spawned or respawned
+        virtual void JustRespawned() { }
 
         // Called at waypoint reached or point movement finished
         virtual void MovementInform(uint32 /*type*/, uint32 /*id*/) { }