Change the structure of Gravity Forms radio fields so it doesn't use the extra ul and li's

rw_change_radio_structure.php

add_filter( 'gform_field_input', 'rw_change_radio_structure', 10, 5 );
function rw_change_radio_structure($input, $field, $value, $lead_id, $form_id){
    $input_type = RGFormsModel::get_input_type($field);
    if($input_type != "radio" || IS_ADMIN && RG_CURRENT_VIEW == "entry")
        return $input;

    $choices = "";

    if(is_array($field["choices"])){
        $choice_id = 0;
        $count = 1;
        
        // add "other" choice to choices if enabled
        if(rgar($field, 'enableOtherChoice')) {
            $other_default_value = GFCommon::get_other_choice_value();
            $field["choices"][] = array('text' => $other_default_value, 'value' => 'gf_other_choice', 'isSelected' => false, 'isOtherChoice' => true);
        }

        $logic_event = !empty($field["conditionalLogicFields"]) ? "onclick='gf_apply_rules(" . $form_id . "," . GFCommon::json_encode($field["conditionalLogicFields"]) . ");'" : "";
        $disabled_text = IS_ADMIN ? "disabled='disabled'" : "";

        foreach($field["choices"] as $choice){
            $id = $field["id"] . '_' . $choice_id++;
            $field_value = !empty($choice["value"]) || rgar($field, "enableChoiceValue") ? $choice["value"] : $choice["text"];
            $checked = rgar($choice,"isSelected") ? "checked='checked'" : "";
            $tabindex = GFCommon::get_tabindex();

            $label = sprintf("<label for='choice_%s'>%s</label>", $id, $choice["text"]);
            $input_focus = '';

            // handle "other" choice
            if(rgar($choice, 'isOtherChoice')) {

                $onfocus = !IS_ADMIN ? 'jQuery(this).prev("input").attr("checked", true); if(jQuery(this).val() == "' . $other_default_value . '") { jQuery(this).val(""); }' : '';
                $onblur = !IS_ADMIN ? 'if(jQuery(this).val().replace(" ", "") == "") { jQuery(this).val("' . $other_default_value . '"); }' : '';

                $input_focus = !IS_ADMIN ? "onfocus=\"jQuery(this).next('input').focus();\"" : "";
                $value_exists = RGFormsModel::choices_value_match($field, $field["choices"], $value);

                if($value == 'gf_other_choice' && rgpost("input_{$field["id"]}_other")){
                    $other_value = rgpost("input_{$field["id"]}_other");
                } else if(!$value_exists && !empty($value)){
                    $other_value = $value;
                    $value = 'gf_other_choice';
                    $checked = "checked='checked'";
                } else {
                    $other_value = $other_default_value;
                }
                $label = "<input name='input_{$field["id"]}_other' type='text' value='" . esc_attr($other_value) . "' onfocus='$onfocus' onblur='$onblur' $tabindex $disabled_text />";
            }

            $choices .= sprintf("<input name='input_%d' type='radio' value='%s' %s id='choice_%s' $tabindex %s $logic_event %s />%s", $field["id"], esc_attr($field_value), $checked, $id, $disabled_text, $input_focus, $label);

            if(IS_ADMIN && $count >=5)
                break;

            $count++;
        }

        $total = sizeof($field["choices"]);
        if($count < $total)
            $choices .= "<div class='gchoice_total'>" . sprintf(__("%d of %d items shown. Edit field to view all", "gravityforms"), $count, $total) . "</div>";
    }
    
    $field_id = "input_{$form_id}_{$field["id"]}";

    return sprintf("<div class='ginput_container'><div class='gfield_radio' id='%s'>%s</div></div>", $field_id, $choices);    
}