removed unused references

MediaBrowser.WebDashboard/Api/DashboardInfoWebSocketListener.cs

@@ -4,7 +4,6 @@ using MediaBrowser.Controller;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Session;
 using MediaBrowser.Model.Logging;
-using System.ComponentModel.Composition;
 using System.Threading.Tasks;
 
 namespace MediaBrowser.WebDashboard.Api
@@ -12,7 +11,6 @@ namespace MediaBrowser.WebDashboard.Api
     /// <summary>
     /// Class DashboardInfoWebSocketListener
     /// </summary>
-    [Export(typeof(IWebSocketListener))]
     class DashboardInfoWebSocketListener : BasePeriodicWebSocketListener<DashboardInfo, object>
     {
         /// <summary>

MediaBrowser.WebDashboard/Api/DashboardService.cs

@@ -13,7 +13,6 @@ using MediaBrowser.Model.Tasks;
 using ServiceStack.ServiceHost;
 using System;
 using System.Collections.Generic;
-using System.ComponentModel.Composition;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
@@ -82,7 +81,6 @@ namespace MediaBrowser.WebDashboard.Api
     /// <summary>
     /// Class DashboardService
     /// </summary>
-    [Export(typeof(IRestfulService))]
     public class DashboardService : IRestfulService, IHasResultFactory
     {
         /// <summary>

MediaBrowser.WebDashboard/MediaBrowser.WebDashboard.csproj

@@ -48,10 +48,7 @@
       <HintPath>..\packages\ServiceStack.Text.3.9.44\lib\net35\ServiceStack.Text.dll</HintPath>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.ComponentModel.Composition" />
     <Reference Include="System.Core" />
-    <Reference Include="System.Runtime.Serialization" />
-    <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.Data" />