Hide the rich text editor in SharePoint 2007 and SharePoint 2010 using XSLT. See https://jcallaghan.com/2011/12/hiding-an-empty-rich-text-column-in-xslt/ for more information. #Website

SharePointHideRichTextField.xsl

// SharePoint 2007 = 59
// SharePoint 2010 = 37
<!-- any conditional formatting would go here -->
<xsl:if test="string-length(@Body) &gt; 37">
  <!-- conditional formatting and presentation would go here -->
  <div class="item body">
    <xsl:value-of disable-output-escaping="yes" select="@Body"/>
  </div>
</xsl:if>