remove some unused defines.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

src/basicio.cpp

@@ -37,7 +37,7 @@
 #endif
 
 #ifdef _WIN32
-#define mode_t unsigned short
+using mode_t = unsigned short;
 #include <io.h>
 #include <windows.h>
 #endif

src/http.cpp

@@ -2,11 +2,6 @@
 
 #include "config.h"
 
-#if defined(_WIN32)
-#define __USE_W32_SOCKETS
-#include <winsock2.h>
-#endif
-
 #include "futils.hpp"
 #include "http.hpp"
 
@@ -32,10 +27,6 @@
 #include <unistd.h>
 #include <cerrno>
 
-#define fopen_S(f, n, o) f = fopen(n, o)
-#define WINAPI
-using DWORD = unsigned long;
-
 #define SOCKET_ERROR (-1)
 #define WSAEWOULDBLOCK EINPROGRESS
 #define WSAENOTCONN EAGAIN
@@ -43,6 +34,8 @@ using DWORD = unsigned long;
 static int WSAGetLastError() {
   return errno;
 }
+#else
+#include <winsock2.h>
 #endif
 
 ////////////////////////////////////////

src/jpgimage.cpp

@@ -16,9 +16,9 @@
 #ifdef _WIN32
 #include <windows.h>
 #else
-#define BYTE char
-#define USHORT uint16_t
-#define ULONG uint32_t
+using BYTE = char;
+using USHORT = uint16_t;
+using ULONG = uint32_t;
 #endif
 
 #include "fff.h"