Remove custom Json serializer from Dlna

Emby.Dlna/DlnaManager.cs

@@ -7,12 +7,14 @@ using System.IO;
 using System.Linq;
 using System.Reflection;
 using System.Text;
+using System.Text.Json;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using Emby.Dlna.Profiles;
 using Emby.Dlna.Server;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Extensions;
+using MediaBrowser.Common.Json;
 using MediaBrowser.Controller;
 using MediaBrowser.Controller.Dlna;
 using MediaBrowser.Controller.Drawing;
@@ -32,7 +34,6 @@ namespace Emby.Dlna
         private readonly IXmlSerializer _xmlSerializer;
         private readonly IFileSystem _fileSystem;
         private readonly ILogger<DlnaManager> _logger;
-        private readonly IJsonSerializer _jsonSerializer;
         private readonly IServerApplicationHost _appHost;
         private static readonly Assembly _assembly = typeof(DlnaManager).Assembly;
 
@@ -43,14 +44,12 @@ namespace Emby.Dlna
             IFileSystem fileSystem,
             IApplicationPaths appPaths,
             ILoggerFactory loggerFactory,
-            IJsonSerializer jsonSerializer,
             IServerApplicationHost appHost)
         {
             _xmlSerializer = xmlSerializer;
             _fileSystem = fileSystem;
             _appPaths = appPaths;
             _logger = loggerFactory.CreateLogger<DlnaManager>();
-            _jsonSerializer = jsonSerializer;
             _appHost = appHost;
         }
 
@@ -495,9 +494,9 @@ namespace Emby.Dlna
                 return profile;
             }
 
-            var json = _jsonSerializer.SerializeToString(profile);
+            var json = JsonSerializer.Serialize(profile, JsonDefaults.GetOptions());
 
-            return _jsonSerializer.DeserializeFromString<DeviceProfile>(json);
+            return JsonSerializer.Deserialize<DeviceProfile>(json, options: JsonDefaults.GetOptions());
         }
 
         public string GetServerDescriptionXml(IHeaderDictionary headers, string serverUuId, string serverAddress)