fix MSTEST0045

Fixing this properly would require the tests to respect
testContext.CancellationToken. I'm not sure this is worth fixing
or how to even do it for the sync methods.

https://learn.microsoft.com/en-us/dotnet/core/testing/mstest-analyzers/mstest0045

Author: mus65

test/Renci.SshNet.IntegrationTests/OldIntegrationTests/SshCommandTest.cs

@@ -54,7 +54,6 @@ public void Test_Execute_SingleCommand()
         }
 
         [TestMethod]
-        [Timeout(5000)]
         public void Test_CancelAsync_Unfinished_Command()
         {
             using var client = new SshClient(SshServerHostName, SshServerPort, User.UserName, User.Password);
@@ -76,7 +75,6 @@ public void Test_CancelAsync_Unfinished_Command()
         }
 
         [TestMethod]
-        [Timeout(5000)]
         public async Task Test_CancelAsync_Kill_Unfinished_Command()
         {
             using var client = new SshClient(SshServerHostName, SshServerPort, User.UserName, User.Password);
@@ -122,7 +120,6 @@ public void Test_CancelAsync_Finished_Command()
         }
 
         [TestMethod]
-        [Timeout(5000)]
         public async Task Test_ExecuteAsync_CancellationToken()
         {
             using var client = new SshClient(SshServerHostName, SshServerPort, User.UserName, User.Password);
@@ -195,7 +192,6 @@ public async Task Test_ExecuteAsync_Timeout()
         }
 
         [TestMethod]
-        [Timeout(15000)]
         public async Task Test_ExecuteAsync_Disconnect()
         {
             using (var client = new SshClient(SshServerHostName, SshServerPort, User.UserName, User.Password))