remove erroneous kube-apiserver.manifest sed line

Author: Jake Sanders

cluster/gce/gci/configure-helper.sh

@@ -1882,7 +1882,6 @@ function start-kube-apiserver {
   sed -i -e "s@{{pillar\['allow_privileged'\]}}@true@g" "${src_file}"
   sed -i -e "s@{{liveness_probe_initial_delay}}@${KUBE_APISERVER_LIVENESS_PROBE_INITIAL_DELAY_SEC:-15}@g" "${src_file}"
   sed -i -e "s@{{secure_port}}@443@g" "${src_file}"
-  sed -i -e "s@{{secure_port}}@8080@g" "${src_file}"
   sed -i -e "s@{{additional_cloud_config_mount}}@@g" "${src_file}"
   sed -i -e "s@{{additional_cloud_config_volume}}@@g" "${src_file}"
   sed -i -e "s@{{webhook_authn_config_mount}}@${webhook_authn_config_mount}@g" "${src_file}"