package/netstat-nat: remove package

Fixes http://autobuild.buildroot.net/results/bc52c072121286ddde3eee98ac28feb98f33dbbd/

The package has not been updated in 15 years (since commit 60ce1b0842de
"Bump netstat-nat to 1.4.10"), the upstream URL is gone and the package
fails to build on modern gcc versions because of missing prototypes, so drop
it.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

Config.in.legacy

@@ -146,6 +146,13 @@ endif
 
 comment "Legacy options removed in 2025.08"
 
+config BR2_PACKAGE_NETSTAT_NAT
+	bool "netstat-nat has been removed"
+	select BR2_LEGACY
+	help
+	  The upstream URL is gone and netstat-nat has been removed
+	  from Buildroot.
+
 config BR2_PACKAGE_LIGHTTPD_LIBEV
 	bool "lighttpd removed libev support"
 	select BR2_LEGACY

package/Config.in

@@ -2596,7 +2596,6 @@ endif
 	source "package/nethogs/Config.in"
 	source "package/netplug/Config.in"
 	source "package/netsnmp/Config.in"
-	source "package/netstat-nat/Config.in"
 	source "package/network-manager/Config.in"
 	source "package/network-manager-openvpn/Config.in"
 	source "package/networkd-dispatcher/Config.in"

package/netstat-nat/Config.in

@@ -1,6 +0,0 @@
-config BR2_PACKAGE_NETSTAT_NAT
-	bool "netstat-nat"
-	help
-	  Displays NAT connections
-
-	  http://tweegy.nl/projects/netstat-nat/

package/netstat-nat/netstat-nat.hash

@@ -1,3 +0,0 @@
-# Locally calculated
-sha256  e945faa283a49f33af15de915a949c9273a230fc17154925364c547adab676ca  netstat-nat-1.4.10.tar.gz
-sha256  91df39d1816bfb17a4dda2d3d2c83b1f6f2d38d53e53e41e8f97ad5ac46a0cad  COPYING

package/netstat-nat/netstat-nat.mk

@@ -1,12 +0,0 @@
-################################################################################
-#
-# netstat-nat
-#
-################################################################################
-
-NETSTAT_NAT_VERSION = 1.4.10
-NETSTAT_NAT_SITE = http://tweegy.nl/download
-NETSTAT_NAT_LICENSE = GPL-2.0+
-NETSTAT_NAT_LICENSE_FILES = COPYING
-
-$(eval $(autotools-package))