Hide emails from ACF “User” field lists

By default, when ACF “User” field is added in a field group, it shows users data in the following format: {user login} ({user first name} {user last name}). The code bellow will change it to {user first name} {user last name}.

add_filter( 'acf/fields/user/result', 'aragile_acf_fields_user_result', 10, 2 );

function aragile_acf_fields_user_result( $item_text, $user ) {
    if ( $user->first_name && $user->last_name ) {
        $item_text = $user->first_name . ' ' . $user->last_name;
    } elseif ( $user->first_name ) {
        $item_text = $user->first_name;
    }

    return $item_text;
}