제목을 필수에서 빼고 싶은데 어떻게 하면 될까요~? 채택완료

   <tr>
            <th scope="row"><label for="wr_subject">제목<strong class="sound_only">필수</strong></label></th>
            <td>
                <div id="autosave_wrapper">
                    <input type="text" name="wr_subject" value="<?php echo $subject ?>" id="wr_subject" required class="frm_input required" size="50" maxlength="255">
                    <?php if ($is_member) { // 임시 저장된 글 기능 ?>
                    <script src="<?php echo G5_JS_URL; ?>/autosave.js"></script>
                    <button type="button" id="btn_autosave" class="btn_frmline">임시 저장된 글 (<span id="autosave_count"><?php echo $autosave_count; ?></span>)</button>
                    <div id="autosave_pop">
                        <strong>임시 저장된 글 목록</strong>
                        <div><button type="button" class="autosave_close"><img src="<?php echo $board_skin_url; ?>/img/btn_close.gif" alt="닫기"></button></div>
                        <ul></ul>
                        <div><button type="button" class="autosave_close"><img src="<?php echo $board_skin_url; ?>/img/btn_close.gif" alt="닫기"></button></div>
                    </div>
                    <?php } ?>
                </div>
            </td>
        </tr>

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알려주시면 감사하겠습니다 ^^