[bad_madman]

@xiphoid

In addition, you can remove options.
Open the template 'showthread_adds' and remove the options which you don't need.
For example:

<option value="attach" $ososel[attach]>Attachement</option>
<option value="length" $ososel[length]>Post Length</option>

Or remove a complete block. For example:

<b>in</b>
<select name="sor"><option value="asc" $sorsel[asc]>ascending</option>
<option value="desc" $sorsel[desc]>descending</option></select>