"우편번호: 필수 입력입니다." 메시지 없애려면 어떻게 해야 하나요? 채택완료

// 필수 입력 검사

function wrestRequired(fld) {

  if (wrestTrim(fld) == '') {

    if (wrestFld == null) {

      // 셀렉트박스일 경우에도 필수 선택 검사합니다.

      wrestMsg = wrestItemname(fld) + ' : ' + (fld.type == 'select-one' ? aslang[21] : aslang[22]) + '\n';

      wrestFld = fld;

    }

  }

}

<div class="form-group has-feedback">

            <label class="col-sm-2 control-label" for="reg_mb_req_addr"><b>주소</b><strong class="sound_only">필수</strong></label>

            <div class="col-sm-10">

            <label for="reg_mb_zip" class="sound_only">우편번호<?php echo $config['cf_req_addr']?'<strong class="sound_only"> 필수</strong>':''; ?></label>

            <label class="add_search col-xs-6" style="padding:0;">

              <input type="text" name="mb_zip" value="<?php echo $member['mb_zip1'].$member['mb_zip2'] ?>" id="reg_mb_zip" <?php echo $config['cf_req_addr']? : ""; ?> required readonly="readonly" class="form-control input-sm" style="font-weight:normal;" size="" maxlength="" placeholder="우편번호">

            </label>

            <label class="col-xs-6" style="padding:0;">

              <button type="button" class="btn btn-black btn-sm win_zip_find color_border" style="height:40px;padding:0 20px;" onclick="win_zip('fregisterform', 'mb_zip', 'mb_addr1', 'mb_addr2', 'mb_addr3', 'mb_addr_jibeon');"><i class="fa fa-search"></i> 주소 검색</button>

            </label>

 

            <div class="addr-line">

              <label class="sound_only" for="reg_mb_addr1">기본주소<?php echo $config['cf_req_addr']?'<strong class="sound_only"> 필수</strong>':''; ?></label>

              <input type="text" name="mb_addr1" value="<?php echo get_text($member['mb_addr1']) ?>" id="reg_mb_addr1" <?php echo $config['cf_req_addr']? : ""; ?> required readonly="readonly" class="form-control input-sm" size="50" placeholder="기본주소">

            </div>

 

            <div class="addr-line">

              <label class="sound_only" for="reg_mb_addr2">상세주소</label>

              <input type="text" name="mb_addr2" value="<?php echo get_text($member['mb_addr2']) ?>" id="reg_mb_addr2" class="form-control input-sm" size="50" placeholder="상세주소를 입력해주세요.">

            </div>

 

            <label class="sound_only" for="reg_mb_addr3">참고항목</label>

            <input type="text" name="mb_addr3" value="<?php echo get_text($member['mb_addr3']) ?>" id="reg_mb_addr3" required class="form-control input-sm" size="50" readonly="readonly" placeholder="참고항목">

            <input type="hidden" name="mb_addr_jibeon" value="<?php echo get_text($member['mb_addr_jibeon']); ?>">

          </div>