Fix some warnings.

Renci.SshClient/Renci.SshNet.Silverlight/ShellStream.SilverlightShared.cs

@@ -10,7 +10,7 @@ namespace Renci.SshNet
     {
         partial void ExecuteThread(Action action)
         {
-            ThreadPool.QueueUserWorkItem((o) => { action(); });
+            ThreadPool.QueueUserWorkItem(o => action());
         }
     }
 }

Renci.SshClient/Renci.SshNet.Silverlight5/ScpClient.SilverlightShared.cs

@@ -1,14 +1,5 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using Renci.SshNet.Channels;
-using System.IO;
-using Renci.SshNet.Common;
+using Renci.SshNet.Channels;
 using Renci.SshNet.Messages.Connection;
-using System.Text.RegularExpressions;
-using System.Threading;
-using System.Diagnostics;
 
 namespace Renci.SshNet
 {

Renci.SshClient/Renci.SshNet.Silverlight5/Session.SilverlightBrowser.cs

@@ -1,14 +1,4 @@
-using System;
-using System.Net;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Documents;
-using System.Windows.Ink;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Animation;
-using System.Windows.Shapes;
-using Renci.SshNet.Messages;
+using Renci.SshNet.Messages;
 
 namespace Renci.SshNet
 {

Renci.SshClient/Renci.SshNet.Silverlight5/Session.SilverlightShared.cs

@@ -6,7 +6,6 @@ using System.Threading;
 using Renci.SshNet.Common;
 using Renci.SshNet.Messages.Transport;
 using System.Text;
-using Renci.SshNet.Messages;
 
 namespace Renci.SshNet
 {

Renci.SshClient/Renci.SshNet.Silverlight5/SftpClient.SilverlightShared.cs

@@ -10,7 +10,7 @@ namespace Renci.SshNet
     {
         partial void ExecuteThread(Action action)
         {
-            ThreadPool.QueueUserWorkItem((o) => { action(); });
+            ThreadPool.QueueUserWorkItem(o => action());
         }
     }
 }

Renci.SshClient/Renci.SshNet.Silverlight5/SshCommand.SilverlightShared.cs

@@ -10,7 +10,7 @@ namespace Renci.SshNet
     {
         partial void ExecuteThread(Action action)
         {
-            ThreadPool.QueueUserWorkItem((o) => { action(); });
+            ThreadPool.QueueUserWorkItem(o => action());
         }
     }
 }

Renci.SshClient/Renci.SshNet/SubsystemSession.cs

@@ -4,7 +4,6 @@ using System.Text;
 using System.Threading;
 using Renci.SshNet.Channels;
 using Renci.SshNet.Common;
-using Renci.SshNet.Messages.Connection;
 
 namespace Renci.SshNet.Sftp
 {