Remove Windows XP specific socket cleanup timer from net/socket.

net/socket/socket_descriptor.cc

Index: net/socket/socket_descriptor.cc
diff --git a/net/socket/socket_descriptor.cc b/net/socket/socket_descriptor.cc
index 0822d2d99831d743601a4b84ccf60ec29d42a45c..b10f2dcb41d6b682d48b9c63d5a3c9d3cec88e54 100644
--- a/net/socket/socket_descriptor.cc
+++ b/net/socket/socket_descriptor.cc
@@ -11,7 +11,6 @@
 
 #if defined(OS_WIN)
 #include <ws2tcpip.h>
-#include "base/win/windows_version.h"
 #include "net/base/winsock_init.h"
 #endif
 
@@ -22,8 +21,7 @@ SocketDescriptor CreatePlatformSocket(int family, int type, int protocol) {
   EnsureWinsockInit();
   SocketDescriptor result = ::WSASocket(family, type, protocol, nullptr, 0,
                                         WSA_FLAG_OVERLAPPED);
-  if (result != kInvalidSocket && family == AF_INET6 &&
-      base::win::OSInfo::GetInstance()->version() >= base::win::VERSION_VISTA) {
+  if (result != kInvalidSocket && family == AF_INET6) {
     DWORD value = 0;
     if (setsockopt(result, IPPROTO_IPV6, IPV6_V6ONLY,
                    reinterpret_cast<const char*>(&value), sizeof(value))) {