package/php: remove wddx extension

Upstream removed the wddx extension with version 7.4:
https://github.com/php/php-src/commit/6bbb18a0b6bef11222caaa55c00abdbcbb55d54b

and moved it to pecl: https://pecl.php.net/package/wddx

The pecl package is unmaintained however so we do not add it as a new
package to buildroot.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit 07044207ed610d3f26deaeddff4749140ad8ec75)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

Config.in.legacy

@@ -146,6 +146,12 @@ endif
 
 comment "Legacy options removed in 2022.02"
 
+config BR2_PACKAGE_PHP_EXT_WDDX
+	bool "php wddx removed"
+	select BR2_LEGACY
+	help
+	  The WDDX extension was removed from php.
+
 config BR2_sh2a
 	bool "sh2a architecture support removed"
 	select BR2_LEGACY

package/php/Config.ext

@@ -385,13 +385,6 @@ config BR2_PACKAGE_PHP_EXT_SIMPLEXML
 	help
 	  SimpleXML support
 
-config BR2_PACKAGE_PHP_EXT_WDDX
-	bool "WDDX"
-	select BR2_PACKAGE_EXPAT
-	select BR2_PACKAGE_PHP_EXT_LIBXML2
-	help
-	  WDDX support
-
 config BR2_PACKAGE_PHP_EXT_XML
 	bool "XML Parser"
 	select BR2_PACKAGE_PHP_EXT_LIBXML2

package/php/php.mk

@@ -150,11 +150,6 @@ PHP_CONF_OPTS += --with-libxml
 PHP_DEPENDENCIES += libxml2
 endif
 
-ifeq ($(BR2_PACKAGE_PHP_EXT_WDDX),y)
-PHP_CONF_OPTS += --enable-wddx --with-libexpat-dir=$(STAGING_DIR)/usr
-PHP_DEPENDENCIES += expat
-endif
-
 ifeq ($(BR2_PACKAGE_PHP_EXT_ZIP),y)
 PHP_DEPENDENCIES += libzip
 endif