Revert changes to the mono Android sample app

src/mono/sample/Android/AndroidSampleApp.csproj

@@ -86,7 +86,6 @@
         MonoRuntimeHeaders="$(MicrosoftNetCoreAppRuntimePackDir)runtimes\android-$(TargetArchitecture)\native\include\mono-2.0"
         Assemblies="@(BundleAssemblies)"
         MainLibraryFileName="$(AssemblyName).dll"
-        IncludeNetworkSecurityConfig="$(IncludeNetworkSecurityConfig)"
         StripDebugSymbols="$(StripDebugSymbols)"
         RuntimeComponents="$(RuntimeComponents)"
         DiagnosticPorts="$(DiagnosticPorts)"

src/mono/sample/Android/Makefile

@@ -1,5 +1,5 @@
 MONO_CONFIG=Release
-MONO_ARCH?=arm64
+MONO_ARCH?=x64
 DOTNET := ../../../../dotnet.sh
 USE_LLVM=true
 AOT=false

src/mono/sample/Android/Program.cs

@@ -1,41 +1,13 @@
-#nullable enable
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
 
 using System;
-using System.Net;
-using System.Net.Sockets;
-using System.Net.Security;
-using System.Security;
-using System.Security.Cryptography;
-using System.Security.Cryptography.X509Certificates;
 
-TestAuthenticateAsClient(hostname: "microsoft.com");
-TestAuthenticateAsClient(hostname: "self-signed.badssl.com");
-TestAuthenticateAsClient(hostname: "expired.badssl.com");
-
-void TestAuthenticateAsClient(string hostname, int port = 443)
+public static class Program
 {
-    using var tcpClient = new TcpClient();
-    IAsyncResult result = tcpClient.BeginConnect(hostname, port, null, null);
-    var connected = result.AsyncWaitHandle.WaitOne(2000, true);
-    if (connected)
+    public static int Main(string[] args)
     {
-        tcpClient.EndConnect(result);
-        var stream = new SslStream(tcpClient.GetStream(), false, ValidateServerCertificate, null);
-        try
-        {
-            stream.AuthenticateAsClient(hostname);
-
-            Console.WriteLine($"OK - {hostname}:{port}");
-        }
-        catch (Exception ex)
-        {
-            Console.WriteLine($"!! - {hostname}:{port} ({ex.Message})");
-            Console.WriteLine(ex);
-        }
+        Console.WriteLine("Hello, Android!"); // logcat
+        return 42;
     }
 }
-
-bool ValidateServerCertificate(object sender, X509Certificate? certificate, X509Chain? chain, SslPolicyErrors sslPolicyErrors)
-{
-    return true;
-}