Remove obsolete hacks for uin32_t

We now require support for stdint.h from the compiler.

library/base64.c

@@ -30,12 +30,7 @@
 
 #include "mbedtls/base64.h"
 
-#if defined(_MSC_VER) && !defined(EFIX64) && !defined(EFI32)
-#include <basetsd.h>
-typedef UINT32 uint32_t;
-#else
 #include <stdint.h>
-#endif
 
 #if defined(MBEDTLS_SELF_TEST)
 #include <string.h>

library/net.c

@@ -87,12 +87,7 @@ static int wsa_init_done = 0;
 
 #include <time.h>
 
-#if defined(_MSC_VER) && !defined(EFIX64) && !defined(EFI32)
-#include <basetsd.h>
-typedef UINT32 uint32_t;
-#else
 #include <stdint.h>
-#endif
 
 /*
  * Prepare for using the sockets interface

library/ssl_cli.c

@@ -42,12 +42,7 @@
 #define mbedtls_free       free
 #endif
 
-#if defined(_MSC_VER) && !defined(EFIX64) && !defined(EFI32)
-#include <basetsd.h>
-typedef UINT32 uint32_t;
-#else
 #include <stdint.h>
-#endif
 
 #if defined(MBEDTLS_HAVE_TIME)
 #include <time.h>