how to hide the 'x' button in Autocomplete Jquery UI in IE11

how to hide the 'x' button in Autocomplete Jquery UI in IE11

Hi, 
how to hide the 'x' button in Auto-complete jQuery UI using  IE 11 as default browser 

when i put the cursor inside the input Auto-complete jQuery UI a button 'x' appear in IE 11 
problem just in IE 11 


i use that css code but it s not working 

    .ui-autocomplete-loading::-ms-clear {
       display: none!important;
    }