[gdk-pixbuf] build: Remove NeXTStep dirent.h special casing

[Bastien Nocera <hadess src gnome org>]

commit b5b6b5cdbedd6ae50e8d3c4e32673f11532181dc
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Aug 1 10:48:31 2017 +0100

    build: Remove NeXTStep dirent.h special casing

 configure.ac |   12 ------------
 1 files changed, 0 insertions(+), 12 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 92d9c79..22d7ccb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -337,18 +337,6 @@ AC_SUBST(GETTEXT_PACKAGE)
 AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE, "$GETTEXT_PACKAGE",
                    [The prefix for our gettext translation domains.])
 
-dnl NeXTStep cc seems to need this
-AC_MSG_CHECKING([for extra flags for POSIX compliance])
-AC_TRY_COMPILE([#include <dirent.h>], [DIR *dir;],
-  AC_MSG_RESULT(none needed),
-  gtk_save_CFLAGS="$CFLAGS"
-  CFLAGS="$CFLAGS -posix"
-  AC_TRY_COMPILE([#include <dirent.h>], [DIR *dir;],
-    AC_MSG_RESULT(-posix),
-    AC_MSG_RESULT()
-    CFLAGS="$gtk_save_CFLAGS"
-    AC_MSG_WARN([Could not determine POSIX flag. (-posix didn't work.)])))
-
 #
 # Run AM_PATH_GLIB_2_0 to make sure that GLib is installed and working
 #