Core/Movement: remove redundant method MovementGenerator::NotifyAIOnFinalize and use existing Finalize - MovementInform implementation

Port From (https://github.com/TrinityCore/TrinityCore/commit/0e0deaefd4e84c8069f6249778774f605fc5e628)

Source/Game/Movement/Generators/FleeingMovementGenerator.cs

@@ -16,6 +16,7 @@
  */
 
 using Framework.Constants;
+using Game.AI;
 using Game.Entities;
 using System;
 
@@ -208,9 +209,9 @@ namespace Game.Movement
         TimeTracker _timer;
     }
 
-    public class TimedFleeingGenerator : FleeingMovementGenerator<Creature>
+    public class TimedFleeingMovementGenerator : FleeingMovementGenerator<Creature>
     {
-        public TimedFleeingGenerator(ObjectGuid fright, uint time) : base(fright)
+        public TimedFleeingMovementGenerator(ObjectGuid fright, uint time) : base(fright)
         {
             _totalFleeTime = new TimeTracker(time);
         }
@@ -243,6 +244,14 @@ namespace Game.Movement
                     owner.ToCreature().GetAI().AttackStart(victim);
                 }
             }
+
+            if (movementInform)
+            {
+                Creature ownerCreature = owner.ToCreature();
+                CreatureAI ai = ownerCreature != null ? ownerCreature.GetAI() : null;
+                if (ai != null)
+                    ai.MovementInform(MovementGeneratorType.TimedFleeing, 0);
+            }
         }
 
         public override MovementGeneratorType GetMovementGeneratorType()

Source/Game/Movement/Generators/MovementGenerators.cs

@@ -61,12 +61,6 @@ namespace Game.Movement
             return false;
         }
 
-        public void NotifyAIOnFinalize(Unit obj)
-        {
-            UnitAI ai = obj.GetAI();
-            ai?.OnMovementGeneratorFinalized(GetMovementGeneratorType());
-        }
-
         public void AddFlag(MovementGeneratorFlags flag) { Flags |= flag; }
         public bool HasFlag(MovementGeneratorFlags flag) { return (Flags & flag) != 0; }
         public void RemoveFlag(MovementGeneratorFlags flag) { Flags &= ~flag; }