compat: remove va_copy.h

va_copy is mandated by C99. MSVC has provided it since VS2013 and no
GCC old enough to lack it can pass the C11 configure check, so both
fallback branches were unreachable.

Signed-off-by: Kacper Michajłow <kasper93@gmail.com>

compat/va_copy.h

@@ -1,34 +0,0 @@
-/*
- * MSVC Compatible va_copy macro
- * Copyright (c) 2012 Derek Buitenhuis
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef COMPAT_VA_COPY_H
-#define COMPAT_VA_COPY_H
-
-#include <stdarg.h>
-
-#if !defined(va_copy) && defined(_MSC_VER)
-#define va_copy(dst, src) ((dst) = (src))
-#endif
-#if !defined(va_copy) && defined(__GNUC__) && __GNUC__ < 3
-#define va_copy(dst, src) __va_copy(dst, src)
-#endif
-
-#endif /* COMPAT_VA_COPY_H */

fftools/cmdutils.c

@@ -30,7 +30,6 @@
    references to libraries that are not being built. */
 
 #include "config.h"
-#include "compat/va_copy.h"
 #include "libavformat/avformat.h"
 #include "libswscale/swscale.h"
 #include "libswresample/swresample.h"

libavutil/bprint.c

@@ -25,7 +25,6 @@
 #include <time.h>
 #include "avstring.h"
 #include "bprint.h"
-#include "compat/va_copy.h"
 #include "error.h"
 #include "macros.h"
 #include "mem.h"