필수입력이 안풀립니다. 채택완료

아래와 같이 쿼리문에서 required 있던부분을 제거해 주었는데요

입력을 안하면 필수입력이 걸려버리네요

어디가 문제인지좀 알려주시면 감사하겠습니다.

<tr><td colspan=4 height=1 bgcolor=#e7e7e7></td></tr>
</tr>
 <td class=write_head>연락처&nbsp;</td>
 <td colspan=3>
 <input class='ed' maxlength="4" size=2 name=wr3_1 itemname="연락처" value="<?=$wr3_1?>" placeholder="">
 - <input class='ed' maxlength="4" size=2 name=wr3_2 itemname="연락처" value="<?=$wr3_2?>" placeholder="">
 - <input class='ed' maxlength="4" size=2 name=wr3_3 itemname="연락처" value="<?=$wr3_3?>" placeholder="">
 &nbsp;<input type=checkbox name=wr3_4 value='yes' <? if($wr3_4 == "yes")  echo "checked"; ?>>공개
 </td>
</tr>
<tr><td colspan=4 height=1 bgcolor=#e7e7e7></td></tr>
<tr>
 <td class=write_head>휴대폰&nbsp;</td>
 <td colspan=3>
 <input class='ed' maxlength="4" size=2 name=wr4_1 itemname="핸드폰"  value="<?=$wr4_1?>" placeholder="">
 - <input class='ed' maxlength="4" size=2 name=wr4_2 itemname="핸드폰"  value="<?=$wr4_2?>" placeholder="">
 - <input class='ed' maxlength="4" size=2 name=wr4_3 itemname="핸드폰"  value="<?=$wr4_3?>" placeholder="">
 &nbsp;<input type=checkbox name=wr4_4 value='yes' <? if($wr4_4 == "yes")  echo "checked"; ?> >공개
 </td>
</tr>​