Remove Hrkt because no codepoints use it

Author: fantasai

css3-writing-modes/Overview.html

@@ -2891,13 +2891,6 @@ <h2 class=no-num id=script-orientations>Appendix B: Bi-orientational
 
      <td>translate
 
-    <tr>
-     <td>Hrkt
-
-     <td>Hiragana / Katakana
-
-     <td>translate
-
     <tr>
      <td>Kana
 

css3-writing-modes/Overview.src.html

@@ -2163,7 +2163,6 @@ <h2 class="no-num" id="script-orientations">Appendix B:
       <tr><td>Bopo	<td>Bopomofo            	<td>translate
       <tr><td>Egyp	<td>Egyptian Hieroglyphs	<td>translate
       <tr><td>Hira	<td>Hiragana            	<td>translate
-      <tr><td>Hrkt	<td>Hiragana / Katakana 	<td>translate
       <tr><td>Kana	<td>Katakana            	<td>translate
       <tr><td>Hani	<td>Han                 	<td>translate
       <tr><td>Hang	<td>Hangul              	<td>translate