Hi I want to remove the + icon next to standard/custom drop down field in netsuite using suitescript 2.0

I don't think that's possible for the standard drop downs, you might want to create a field and then add all the select options there apart from 'New' and then after it has been populated, set that to your standard field.

@D17339, if you are trying to restrict addition ability for any record all you need to do is set the role to have view and maybe edit access for that record and the "+" will go away for that role. If a role can't add a record type the dropdown will automatically not have that plus icon.

Thank you