select2 - hiding the search box

It's on their Examples page: https://select2.org/searching#hiding-the-search-box

$(".js-example-basic-hide-search").select2({
  minimumResultsForSearch: Infinity
});

See this thread https://github.com/ivaynberg/select2/issues/489, you can hide the search box by setting minimumResultsForSearch to a negative value.

$('select').select2({
    minimumResultsForSearch: -1
});