[gtk/gtk-3-24: 1/2] build: remove unused check for GNU ftw

[Matthias Clasen <matthiasc src gnome org>]

commit 1b52b4881425ba9edf832408040806c693976d7e
Author: Christoph Reiter <creiter src gnome org>
Date:   Tue Apr 2 08:52:31 2019 +0200

    build: remove unused check for GNU ftw
    
    It sets HAVE_GNU_FTW which is unused since 4acbcf9e97d7aa

 config.h.win32.in |  3 ---
 configure.ac      | 13 -------------
 2 files changed, 16 deletions(-)
---
diff --git a/config.h.win32.in b/config.h.win32.in
index cf9d9c4d18..f65660c797 100644
--- a/config.h.win32.in
+++ b/config.h.win32.in
@@ -77,9 +77,6 @@
 /* Define if gio-unix is available */
 /* #undef HAVE_GIO_UNIX */
 
-/* Have GNU ftw */
-/* #undef HAVE_GNU_FTW */
-
 /* Define to 1 if you have the `httpGetAuthString' function. */
 /* #undef HAVE_HTTPGETAUTHSTRING */
 
diff --git a/configure.ac b/configure.ac
index f8314dd759..d315a54807 100644
--- a/configure.ac
+++ b/configure.ac
@@ -841,19 +841,6 @@ AC_CHECK_HEADERS(ftw.h,
                  AC_DEFINE(HAVE_FTW_H, 1,
                            [Define to 1 if ftw.h is available]))
 
-AC_MSG_CHECKING([for GNU ftw extensions])
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#define _XOPEN_SOURCE 500
-                                     #define _GNU_SOURCE
-                                     #include <ftw.h>]],
-                                   [[int flags = FTW_ACTIONRETVAL;]])],
-                  [gtk_ok=yes],[gtk_ok=no])
-if test $gtk_ok = yes; then
-    AC_MSG_RESULT([yes])
-    AC_DEFINE(HAVE_GNU_FTW, 1, [Have GNU ftw])
-else
-    AC_MSG_RESULT([no])
-fi
-
 #
 # Disable deprecation checks for all libraries we depend on on stable branches.
 # This is so newer versions of those libraries don't cause more warnings with