Remove Pipes test from System.Diagnostics.Process.Tests

The test exercises multiple libraries (Process, Pipes) and is focused on inter-process communication, so it'll be recreated in a new project focused on cross-process communication testing.

Author: stephentoub

src/System.Diagnostics.Process/tests/System.Diagnostics.Process.TestConsoleApp/TestConsoleApp.cs

@@ -53,19 +53,6 @@ static int Main(string[] args)
                     }
                     // no sleep here
                 }
-                else if (args[0].Equals("ipc"))
-                {
-                    using (var inbound = new AnonymousPipeClientStream(PipeDirection.In, args[1]))
-                    using (var outbound = new AnonymousPipeClientStream(PipeDirection.Out, args[2]))
-                    {
-                        // Echo 10 bytes from inbound to outbound
-                        for (int i = 0; i < 10; i++)
-                        {
-                            int b = inbound.ReadByte();
-                            outbound.WriteByte((byte)b);
-                        }
-                    }
-                }
                 else
                 {
                     Console.WriteLine(string.Join(" ", args));

src/System.Diagnostics.Process/tests/System.Diagnostics.Process.Tests/ProcessTests.cs

@@ -4,7 +4,6 @@
 using Microsoft.Win32.SafeHandles;
 using System.Collections.Generic;
 using System.IO;
-using System.IO.Pipes;
 using System.Linq;
 using System.Runtime.InteropServices;
 using System.Threading;
@@ -581,31 +580,6 @@ public void TestStartInfo()
             }
         }
 
-        [Fact]
-        public void TestIPCProcess()
-        {
-            Process p = CreateProcess("ipc");
-
-            using (var outbound = new AnonymousPipeServerStream(PipeDirection.Out, HandleInheritability.Inheritable))
-            using (var inbound = new AnonymousPipeServerStream(PipeDirection.In, HandleInheritability.Inheritable))
-            {
-                p.StartInfo.Arguments += " " + outbound.GetClientHandleAsString() + " " + inbound.GetClientHandleAsString();
-                p.Start();
-                outbound.DisposeLocalCopyOfClientHandle();
-                inbound.DisposeLocalCopyOfClientHandle();
-
-                for (byte i = 0; i < 10; i++)
-                {
-                    outbound.WriteByte(i);
-                    int received = inbound.ReadByte();
-                    Assert.Equal(i, received);
-                }
-
-                Assert.True(p.WaitForExit(WaitInMS));
-                Assert.Equal(SuccessExitCode, p.ExitCode);
-            }
-        }
-
         [Fact]
         public void TestThreadCount()
         {