get rid of now empty #if

Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1079)

include/openssl/rand.h

@@ -65,10 +65,6 @@ int RAND_egd_bytes(const char *path, int bytes);
 # endif
 int RAND_poll(void);
 
-# if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
-
-# endif
-
 /* BEGIN ERROR CODES */
 /*
  * The following lines are auto generated by the script mkerr.pl. Any changes