More cleanups of custom classes in favor of .NET runtime types.

Source/Game/Chat/Channels/ChannelAppenders.cs

@@ -19,7 +19,6 @@ using Framework.Constants;
 using Game.Cache;
 using Game.Entities;
 using Game.Maps;
-using Game.Networking;
 using Game.Networking.Packets;
 
 namespace Game.Chat

Source/Game/Chat/Commands/BNetAccountCommands.cs

@@ -19,7 +19,6 @@ using Framework.Constants;
 using Framework.Database;
 using Framework.IO;
 using System;
-using System.Linq;
 
 namespace Game.Chat.Commands
 {

Source/Game/Chat/Commands/GameObjectCommands.cs

@@ -17,13 +17,13 @@
 
 using Framework.Constants;
 using Framework.Database;
-using Framework.GameMath;
 using Framework.IO;
 using Game.DataStorage;
 using Game.Entities;
 using Game.Maps;
 using System;
 using System.Collections.Generic;
+using System.Numerics;
 using System.Text;
 
 namespace Game.Chat
@@ -614,7 +614,7 @@ namespace Game.Chat
                 Player player = handler.GetPlayer();
                 Map map = player.GetMap();
 
-                GameObject obj = GameObject.CreateGameObject(objectInfo.entry, map, player, Quaternion.fromEulerAnglesZYX(player.GetOrientation(), 0.0f, 0.0f), 255, GameObjectState.Ready);
+                GameObject obj = GameObject.CreateGameObject(objectInfo.entry, map, player, Quaternion.CreateFromRotationMatrix(Extensions.fromEulerAnglesZYX(player.GetOrientation(), 0.0f, 0.0f)), 255, GameObjectState.Ready);
                 if (!obj)
                     return false;
 
@@ -658,7 +658,7 @@ namespace Game.Chat
                 if (spawntime != 0)
                     spawntm = spawntime;
 
-                Quaternion rotation = Quaternion.fromEulerAnglesZYX(player.GetOrientation(), 0.0f, 0.0f);
+                Quaternion rotation = Quaternion.CreateFromRotationMatrix(Extensions.fromEulerAnglesZYX(player.GetOrientation(), 0.0f, 0.0f));
 
                 if (Global.ObjectMgr.GetGameObjectTemplate(id) == null)
                 {

Source/Game/Chat/LanguageManager.cs

@@ -19,12 +19,8 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using Game.DataStorage;
 using Framework.Constants;
-using Game.Spells;
-using Framework.Dynamic;
 using Framework.Collections;
 
 namespace Game.Chat