rootfs-postcommands.bbclass: drop obsolete sshd UseDNS rootfs postprocessing

The sshd UseDNS option has defaulted to "no" since openssh 6.8p1,
so it's no longer necessary to postprocess the rootfs to force the
option:

  https://www.openssh.com/txt/release-6.8

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/rootfs-postcommands.bbclass b/meta/classes/rootfs-postcommands.bbclass
index 221869e04cee4b6cb0f14ef34a1211b891f51830..9d4d95e9949e0151de819e4e7186b12d65d222f1 100644 (file)
--- a/meta/classes/rootfs-postcommands.bbclass
+++ b/meta/classes/rootfs-postcommands.bbclass
@@ -36,11 +36,6 @@ ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains("DISTRO_FEATURES", "systemd"
 
 ROOTFS_POSTPROCESS_COMMAND += 'empty_var_volatile;'
 
-# Disable DNS lookups, the SSH_DISABLE_DNS_LOOKUP can be overridden to allow
-# distros to choose not to take this change
-SSH_DISABLE_DNS_LOOKUP ?= " ssh_disable_dns_lookup ; "
-ROOTFS_POSTPROCESS_COMMAND_append_qemuall = "${SSH_DISABLE_DNS_LOOKUP}"
-
 # Sort the user and group entries in /etc by ID in order to make the content
 # deterministic. Package installs are not deterministic, causing the ordering
 # of entries to change between builds. In case that this isn't desired,
@@ -171,12 +166,6 @@ ssh_allow_empty_password () {
        fi
 }
 
-ssh_disable_dns_lookup () {
-       if [ -e ${IMAGE_ROOTFS}${sysconfdir}/ssh/sshd_config ]; then
-               sed -i -e 's:#UseDNS yes:UseDNS no:' ${IMAGE_ROOTFS}${sysconfdir}/ssh/sshd_config
-       fi
-}
-
 python sort_passwd () {
     import rootfspostcommands
     rootfspostcommands.sort_passwd(d.expand('${IMAGE_ROOTFS}${sysconfdir}'))