Remove the treehead (bug #10950).

suite/common/related/related-panel.xul

@@ -78,11 +78,6 @@
 
     <treecol rdf:resource="http://home.netscape.com/NC-rdf#Name" />
 
-    <!-- remove the TREEHEAD when bug 9923 is fixed. -->
-    <treehead style="height: 0px;">
-      <treerow><treecell/></treerow>
-    </treehead>
-
     <treechildren>
       <treeitem id="NC:RelatedLinks">
         <treerow>

xpfe/components/related/resources/related-panel.xul

@@ -78,11 +78,6 @@
 
     <treecol rdf:resource="http://home.netscape.com/NC-rdf#Name" />
 
-    <!-- remove the TREEHEAD when bug 9923 is fixed. -->
-    <treehead style="height: 0px;">
-      <treerow><treecell/></treerow>
-    </treehead>
-
     <treechildren>
       <treeitem id="NC:RelatedLinks">
         <treerow>

xpfe/components/sidebar/resources/flash.xul

@@ -61,14 +61,5 @@
         </treeitem>
       </treechildren>
     </template>
-
-    <!-- remove the TREEHEAD when bug 9923 is fixed. -->
-    <treehead>
-      <treerow>
-        <treecell/>
-        <treecell/>
-        <treecell/>
-      </treerow>
-    </treehead>
   </tree>
 </window>