libnftnl: drop useless BR2_PACKAGE_LIBNFTNL_XML

Commit fa0d1ebff99 (libnftnl: bump to version 1.0.9) removed the mxml
dependency. Remove the redundant BR2_PACKAGE_LIBNFTNL_XML config symbol
as well.

Cc: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

Config.in.legacy

@@ -232,6 +232,12 @@ config BR2_KERNEL_HEADERS_4_17
 	  Version 4.17.x of the Linux kernel headers are no longer
 	  maintained upstream and are now removed.
 
+config BR2_PACKAGE_LIBNFTNL_XML
+	bool "libnftl no longer supports XML output"
+	select BR2_LEGACY
+	help
+	  libnftnl removed integration with libmxml.
+
 ###############################################################################
 comment "Legacy options removed in 2018.08"
 

package/libnftnl/Config.in

@@ -22,14 +22,4 @@ config BR2_PACKAGE_LIBNFTNL_JSON
 	help
 	  Enable JSON parsing support
 
-config BR2_PACKAGE_LIBNFTNL_XML
-	bool "enable XML support"
-	depends on BR2_TOOLCHAIN_HAS_THREADS
-	select BR2_PACKAGE_MXML
-	help
-	  Enable XML parsing support
-
-comment "libnftnl XML parsing support needs a toolchain w/ threads"
-	depends on !BR2_TOOLCHAIN_HAS_THREADS
-
 endif