Fix R# warnings.

Renci.SshClient/Renci.SshNet.Silverlight/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.Silverlight/Shell.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.Silverlight/SshCommand.SilverlightShared.cs

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