Delete dead code in ServerModeTestsBase (#6854)

Author: Youssef1313

test/IntegrationTests/Microsoft.Testing.Platform.Acceptance.IntegrationTests/ServerMode/ServerModeTestsBase.cs

@@ -69,86 +69,4 @@ protected async Task<TestingPlatformClient> StartAsServerAndConnectToTheClientAs
 
         return new TestingPlatformClient(new(tcpClient.GetStream()), tcpClient, processHandler);
     }
-
-    protected async Task<TestingPlatformClient> StartAsServerAndConnectAsync(TestHost testHost, bool enableDiagnostic = false)
-    {
-        var environmentVariables = new Dictionary<string, string?>(DefaultEnvironmentVariables);
-        foreach (DictionaryEntry entry in Environment.GetEnvironmentVariables())
-        {
-            // Skip all unwanted environment variables.
-            string? key = entry.Key.ToString();
-            if (WellKnownEnvironmentVariables.ToSkipEnvironmentVariables.Contains(key, StringComparer.OrdinalIgnoreCase))
-            {
-                continue;
-            }
-
-            environmentVariables[key!] = entry.Value!.ToString()!;
-        }
-
-        // We expect to not fail for unhandled exception in server mode for IDE needs.
-        environmentVariables.Add("TESTINGPLATFORM_EXIT_PROCESS_ON_UNHANDLED_EXCEPTION", "0");
-
-        // To attach to the server on startup
-        // environmentVariables.Add(EnvironmentVariableConstants.TESTINGPLATFORM_LAUNCH_ATTACH_DEBUGGER, "1");
-        TaskCompletionSource<int> portFound = new();
-        ProcessConfiguration processConfig = new(testHost.FullName)
-        {
-            OnStandardOutput =
-            (_, output) =>
-            {
-                Match m = ParsePort().Match(output);
-                if (m.Success && int.TryParse(m.Groups[1].Value, out int port))
-                {
-                    portFound.SetResult(port);
-                }
-
-                // Do not remove pls
-                // NotepadWindow.WriteLine($"[OnStandardOutput] {output}");
-            },
-
-            // Do not remove pls
-            // OnErrorOutput = (_, output) => NotepadWindow.WriteLine($"[OnErrorOutput] {output}"),
-            OnErrorOutput = (_, output) =>
-            {
-                if (!portFound.Task.IsCompleted)
-                {
-                    try
-                    {
-                        portFound.SetException(new InvalidOperationException(output));
-                    }
-                    catch (InvalidOperationException)
-                    {
-                        // possible race
-                    }
-                }
-            },
-            OnExit = (processHandle, exitCode) =>
-            {
-                if (exitCode != 0)
-                {
-                    if (portFound.Task.Exception is null && !portFound.Task.IsCompleted)
-                    {
-                        portFound.SetException(new InvalidOperationException($"Port not found during parsing and process exited with code '{exitCode}'"));
-                    }
-                }
-            },
-
-            // OnExit = (_, exitCode) => NotepadWindow.WriteLine($"[OnExit] Process exit code '{exitCode}'"),
-            Arguments = "--server --diagnostic --diagnostic-verbosity trace",
-            EnvironmentVariables = environmentVariables,
-        };
-
-        IProcessHandle processHandler = ProcessFactory.Start(processConfig, cleanDefaultEnvironmentVariableIfCustomAreProvided: false);
-        await portFound.Task;
-
-        var tcpClient = new TcpClient();
-        using CancellationTokenSource cancellationTokenSource = new(TimeSpan.FromSeconds(90));
-#pragma warning disable VSTHRD103 // Call async methods when in an async method
-        await tcpClient.ConnectAsync(new IPEndPoint(IPAddress.Loopback, portFound.Task.Result), cancellationTokenSource.Token);
-#pragma warning restore VSTHRD103 // Call async methods when in an async method
-        return new TestingPlatformClient(new(tcpClient.GetStream()), tcpClient, processHandler, enableDiagnostic);
-    }
-
-    [GeneratedRegex(@"Starting server. Listening on port '(\d+)'")]
-    private static partial Regex ParsePort();
 }