Delete feminine/masculine indicators as not math (w3c/mathml#151)

Author: NSoiffer

unicode.xml

@@ -2239,7 +2239,6 @@ Barbara Beeton for the STIX project
          <entity id="ordf" set="9573-2003-isonum">
             <desc>=ordinal indicator, feminine</desc>
          </entity>
-         <operator-dictionary priority="880" form="postfix" lspace="0" rspace="0" accent="true"/>
          <description unicode="1.1">FEMININE ORDINAL INDICATOR</description>
       </character>
       <character id="U000AB" dec="171" mode="mixed" type="opening">
@@ -2601,7 +2600,6 @@ Barbara Beeton for the STIX project
          <entity id="ordm" set="9573-2003-isonum">
             <desc>=ordinal indicator, masculine</desc>
          </entity>
-         <operator-dictionary priority="880" form="postfix" lspace="0" rspace="0" accent="true"/>
          <description unicode="1.1">MASCULINE ORDINAL INDICATOR</description>
       </character>
       <character id="U000BB" dec="187" mode="mixed" type="closing">