message: Remove unused `node` argument.
diff: @@ -15,7 +15,6 @@ for ARGUMENT in "$@"; do
  version) PROTOCOL_VERSION=${VALUE} ;;
  era) ACTIVATE_ERA=${VALUE} ;;
  loglevel) LOG_LEVEL=${VALUE} ;;
  - node) NODE_ID=${VALUE} ;;
  *) echo "Unknown argument '${KEY}'. Use 'version', 'era' or 'loglevel'." && exit 1;;
  esac
  done
  @@ -23,7 +22,6 @@ done
  LOG_LEVEL=${LOG_LEVEL:-$RUST_LOG}
  LOG_LEVEL=${LOG_LEVEL:-debug}
  export RUST_LOG=$LOG_LEVEL
  -NODE_ID=${NODE_ID:-"all"}
  function do_upgrade() {
  local PROTOCOL_VERSION=${1}
  @@ -72,7 +70,3 @@ function do_upgrade() {
  log "upgrade node(s) begins ... please wait"
  do_upgrade "$PROTOCOL_VERSION" "$ACTIVATE_ERA"
  log "upgrade node(s) complete"
  -
  -# Display status.
  -sleep 1.0
  -source "$NCTL"/sh/node/status.sh node="$NODE_ID"
  