util: Remove va_copy fixup because of c11 is required

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19646>

src/gallium/include/pipe/p_compiler.h

@@ -77,15 +77,6 @@ typedef unsigned char boolean;
 #define FALSE false
 #endif
 
-#ifndef va_copy
-#ifdef __va_copy
-#define va_copy(dest, src) __va_copy((dest), (src))
-#else
-#define va_copy(dest, src) (dest) = (src)
-#endif
-#endif
-
-
 /* XXX: Use standard `__func__` instead */
 #ifndef __FUNCTION__
 #  define __FUNCTION__ __func__

src/util/u_printf.c

@@ -38,14 +38,6 @@
 _CRTIMP int _vscprintf(const char *format, va_list argptr);
 #endif
 
-#ifndef va_copy
-#ifdef __va_copy
-#define va_copy(dest, src) __va_copy((dest), (src))
-#else
-#define va_copy(dest, src) (dest) = (src)
-#endif
-#endif
-
 static const char*
 util_printf_prev_tok(const char *str)
 {