You should be able to do this by wrapping a conditional around the html and change X to the forumID where you don't want it to be displayed.
So something like this:
Code:
<if condition="$forum[forumid] != X">
<tr align="center">
<td class="thead"> </td>
<td class="thead" width="100%" align="$stylevar[left]">$vbphrase[forum]</td>
<td class="thead" width="175">$vbphrase[last_post]</td>
<td class="thead">$vbphrase[threads]</td>
<td class="thead">$vbphrase[posts]</td>
<if condition="$vboptions[showmoderatorcolumn]">
<td class="thead">$vbphrase[moderator]</td>
</if>
</tr>
</if>
Hope this helps