update gevent/libev_vfd.py: remove GEVENT_VFD_MODE, it's no longer needed....

update gevent/libev_vfd.py: remove GEVENT_VFD_MODE, it's no longer needed. import winsock2.h instead of winsock.h

gevent/libev_vfd.h

@@ -6,11 +6,10 @@
  * handles. Then by defining special macros libev
  * will use our functions.
  */
-#define GEVENT_VFD_MODE
 
 #define WIN32_LEAN_AND_MEAN
+#include <winsock2.h>
 #include <windows.h>
-#include <winsock.h>
 
 typedef struct vfd_entry_t
 {