1.2.4 Remove ‘style:columns’

OpenOffice impress chocks on ‘style:columns’ (why?)

<..configure ooimpress latex..>+
 \ConfigureOO{Sect1}{\Hnewline
    <style:style style:name="Sect1"
                 style:family="section">
    <\style:sectionproperties>
       <!--style:columns fo:column-count="1"
                    fo:column-gap="0cm">
          <style:column fo:margin-top="0.5cm"
                       fo:margin-left="0cm"
                       fo:margin-right="0cm"
          />
       </style:columns-->
    </\style:sectionproperties>
    </style:style>
 \Hnewline }
-_-_-

<..configure ooimpress latex..>+
 \ConfigureOO{Sect2}{\Hnewline
 <style:style    style:name="Sect2"
    style:family="section">
    <\style:sectionproperties>
       <!--style:columns fo:column-count="0" fo:column-gap="0cm"/-->
    </\style:sectionproperties>
 </style:style>
 \Hnewline }
-_-_-

<..configure ooimpress tex4ht..>+
 \Configure{figure-style}{%
    <style:style style:name="Figure" style:family="section">\Hnewline
      <style:section-properties
                                fo:margin-left="0.25in"
                                fo:margin-right="0.25in"
                                style:editable="true">\Hnewline
          <!--style:columns fo:column-count="0"
                         fo:column-gap="0in"/-->
      </style:section-properties>
    </style:style>\Hnewline
 }
-_-_-

<..configure ooimpress g-brief..>
 \ConfigureOO{g-brief-header}{\Hnewline
 <style:style style:name="header-style" style:family="section">\Hnewline
    <\style:properties text:dont-balance-text-columns="false"
                      fo:margin-bottom="2cm">\Hnewline
       <!--style:columns    fo:column-count="2"
                         fo:column-gap="1in">\Hnewline
           <style:column fo:margin-left="0in"
                         fo:margin-right="0in"/>\Hnewline
           <style:column fo:margin-left="0in"
                         fo:margin-right="0in"/>\Hnewline
       </style:columns-->\Hnewline
    </\style:properties>\Hnewline
 </style:style>\Hnewline
 }
-_-_-