Revert "Add new InternetAddress class with a static lookup function (including IPv6 results)."

tests/standalone/io/socket_upgrade_to_secure_test.dart

Index: tests/standalone/io/socket_upgrade_to_secure_test.dart
diff --git a/tests/standalone/io/socket_upgrade_to_secure_test.dart b/tests/standalone/io/socket_upgrade_to_secure_test.dart
index 33b2059ef9b3ac53a686b6bf8f637ab16145d054..11f2ca4a97888910fd8028c551af7383bed89f3e 100644
--- a/tests/standalone/io/socket_upgrade_to_secure_test.dart
+++ b/tests/standalone/io/socket_upgrade_to_secure_test.dart
@@ -12,6 +12,7 @@ import "dart:async";
 import "dart:io";
 import "dart:isolate";
 
+const SERVER_ADDRESS = "127.0.0.1";
 const HOST_NAME = "localhost";
 const CERTIFICATE = "localhost_cert";
 
@@ -194,7 +195,7 @@ void test(bool handshakeBeforeSecure,
     });
   }
 
-  ServerSocket.bind(HOST_NAME, 0, 5).then(serverReady);
+  ServerSocket.bind(SERVER_ADDRESS, 0, 5).then(serverReady);
 }
 
 main() {