Delete erroneous Socket test (#105448)

Author: stephentoub

src/libraries/System.Net.Sockets/tests/FunctionalTests/CreateSocketTests.cs

@@ -688,35 +688,6 @@ public unsafe void Ctor_SafeHandle_SocketPair_Success()
             close(ptr[1]);
         }
 
-        // On some Unix machines the second (manual) handle close succeeds despite Socket's/SafeSocketHandle's Dispose
-        // completing a succesful close of the same handle value previously.
-        // We may investigate this, but it doesn't indicate incorrect behavior in Socket code,
-        // so making the test PlatformSpecific seems to be good enough. The SafeSocketHandle lifecycle logic is platform cross-platform.
-        [PlatformSpecific(TestPlatforms.Windows)]
-        [Theory]
-        [InlineData(false)]
-        [InlineData(true)]
-        public void Ctor_Dispose_HandleClosedIfOwnsHandle(bool ownsHandle)
-        {
-            Socket original = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
-            IntPtr handleValue = original.Handle;
-
-            SafeSocketHandle handleClone = new SafeSocketHandle(handleValue, ownsHandle: ownsHandle);
-            Socket socketClone = new Socket(handleClone);
-            socketClone.Dispose();
-
-            bool manualCloseSucceeded = closesocket(handleValue) == 0;
-            Assert.Equal(!ownsHandle, manualCloseSucceeded);
-
-#if DEBUG   // The finalizer will fail to close the handle which leads to an assertion failure in Debug builds.
-            GC.SuppressFinalize(original);
-            GC.SuppressFinalize(original.SafeHandle);
-#endif
-
-            [DllImport("ws2_32.dll", SetLastError = true)]
-            static extern int closesocket(IntPtr socketHandle);
-        }
-
         private static void AssertEqualOrSameException<T>(Func<T> expected, Func<T> actual)
         {
             T r1 = default, r2 = default;