vita: Replace select to poll

now newlib support [this][1]

[1]: https://github.com/vitasdk/newlib/pull/70

src/PlatformSockets.h

@@ -53,24 +53,7 @@ typedef int SOCKADDR_LEN;
 #include <netdb.h>
 #include <errno.h>
 #include <signal.h>
-#if defined(__vita__)
-#define POLLIN      0x0001
-#define POLLPRI     0x0002
-#define POLLOUT     0x0004
-#define POLLERR     0x0008
-#define POLLRDNORM  0x0040
-#define POLLWRNORM  POLLOUT
-#define POLLRDBAND  0x0080
-#define POLLWRBAND  0x0100
-
-struct pollfd {
-    int fd;
-    short events;
-    short revents;
-};
-#else
 #include <poll.h>
-#endif
 
 #define ioctlsocket ioctl
 #define LastSocketError() errno