Update zwave-js-ui-update.sh

clean up

misc/zwave-js-ui-update.sh

@@ -6,29 +6,10 @@ RD=`echo "\033[01;31m"`
 BL=`echo "\033[36m"`
 GN=`echo "\033[1;92m"`
 CL=`echo "\033[m"`
-RETRY_NUM=10
-RETRY_EVERY=3
-NUM=$RETRY_NUM
 CM="${GN}✓${CL}"
 CROSS="${RD}✗${CL}"
 BFR="\\r\\033[K"
 HOLD="-"
-set -o errexit
-set -o errtrace
-set -o nounset
-set -o pipefail
-shopt -s expand_aliases
-alias die='EXIT=$? LINE=$LINENO error_exit'
-trap die ERR
-
-function error_exit() {
-  trap - ERR
-  local reason="Unknown failure occured."
-  local msg="${1:-$reason}"
-  local flag="${RD}‼ ERROR ${CL}$EXIT@$LINE"
-  echo -e "$flag $msg" 1>&2
-  exit $EXIT
-}
 function msg_info() {
     local msg="$1"
     echo -ne " ${HOLD} ${YW}${msg}..."