Remove unused fields.

src/Renci.SshNet.Tests/Classes/BaseClientTest_Disconnected_KeepAliveInterval_NotNegativeOne.cs

@@ -14,7 +14,6 @@ namespace Renci.SshNet.Tests.Classes
         private BaseClient _client;
         private ConnectionInfo _connectionInfo;
         private TimeSpan _keepAliveInterval;
-        private int _keepAliveCount;
 
         [TestInitialize]
         public void Setup()
@@ -38,7 +37,6 @@ namespace Renci.SshNet.Tests.Classes
         {
             _connectionInfo = new ConnectionInfo("host", "user", new PasswordAuthenticationMethod("user", "pwd"));
             _keepAliveInterval = TimeSpan.FromMilliseconds(50d);
-            _keepAliveCount = 0;
         }
 
         private void CreateMocks()

src/Renci.SshNet.Tests/Classes/ClientAuthenticationTest_Success_MultiList_PartialSuccessLimitReachedFollowedBySuccessInAlternateBranch.cs

@@ -35,7 +35,6 @@ namespace Renci.SshNet.Tests.Classes
     {
         private int _partialSuccessLimit;
         private ClientAuthentication _clientAuthentication;
-        private SshAuthenticationException _actualException;
 
         protected override void SetupData()
         {