Core/Creature: drop method SetPosition

Port From (https://github.com/TrinityCore/TrinityCore/commit/55576d20d837a9b4575c11a73940c29c0e8e605b)

Source/Game/Chat/Commands/NPCCommands.cs

@@ -162,7 +162,7 @@ namespace Game.Chat
                     data.posZ = z;
                     data.orientation = o;
                 }
-                creature.SetPosition(x, y, z, o);
+                creature.UpdatePosition(x, y, z, o);
                 creature.GetMotionMaster().Initialize();
                 if (creature.IsAlive())                            // dead creature will reset movement generator at respawn
                 {

Source/Game/Entities/Creature/Creature.cs

@@ -2616,20 +2616,6 @@ namespace Game.Entities
         }
         bool CanNotReachTarget() { return m_cannotReachTarget; }
 
-        public void SetPosition(float x, float y, float z, float o)
-        {
-            // prevent crash when a bad coord is sent by the client
-            if (!GridDefines.IsValidMapCoord(x, y, z, o))
-            {
-                Log.outDebug(LogFilter.Unit, "Creature.SetPosition({0}, {1}, {2}) .. bad coordinates!", x, y, z);
-                return;
-            }
-
-            GetMap().CreatureRelocation(ToCreature(), x, y, z, o);
-            if (IsVehicle())
-                GetVehicleKit().RelocatePassengers();
-        }
-
         public float GetAggroRange(Unit target)
         {
             // Determines the aggro range for creatures (usually pets), used mainly for aggressive pet target selection.