libc: remove sprintf()

libc/include/socks/libc/stdio.h

@@ -8,16 +8,8 @@
 extern "C" {
 #endif
 
-#define sprintf sprintf_
-int sprintf_(char *buffer, const char *format, ...);
-
-#define snprintf  snprintf_
-#define vsnprintf vsnprintf_
-int  snprintf_(char *buffer, size_t count, const char *format, ...);
-int vsnprintf_(char *buffer, size_t count, const char *format, va_list va);
-
-#define vprintf vprintf_
-int vprintf_(const char *format, va_list va);
+int snprintf(char *buffer, size_t count, const char *format, ...);
+int vsnprintf(char *buffer, size_t count, const char *format, va_list va);
 
 int fctprintf(void (*out)(char character, void *arg), void *arg, const char*format, ...);