unbreak muttator's completions again. I can't say if tab numbering in vimperator still works, as it didn't for me before this commit either.

content/bindings.xml

@@ -1,8 +1,6 @@
 <?xml version="1.0"?>
 
 <!DOCTYPE bindings [
-<!ENTITY % tabBrowserDTD SYSTEM "chrome://browser/locale/tabbrowser.dtd" >
-%tabBrowserDTD;
 <!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd">
 %globalDTD;
 ]>
@@ -18,23 +16,6 @@
             <children/>
         </content>
     </binding>
-    <binding id="tab"
-             extends="chrome://browser/content/tabbrowser.xml#tabbrowser-tab">
-        <content chromedir="&locale.dir;"
-                 closetabtext="&closeTab.label;">
-            <xul:stack class="liberator-tab-stack">
-                <xul:image xbl:inherits="validate,src=image" class="tab-icon-image hl-TabIcon"/>
-                <xul:vbox>
-                    <xul:spring flex="1"/>
-                    <xul:label xbl:inherits="value=ordinal" class="hl-TabIconNumber"/>
-                    <xul:spring flex="1"/>
-                </xul:vbox>
-            </xul:stack>
-            <xul:label xbl:inherits="value=ordinal" class="hl-TabNumber"/>
-            <xul:label flex="1" xbl:inherits="value=label,crop,accesskey" class="tab-text hl-TabText"/>
-            <xul:toolbarbutton anonid="close-button" tabindex="-1" class="tab-close-button hl-TabClose"/>
-        </content>
-    </binding>
     <binding id="compitem-td">
         <!-- No white space. The table is white-space: pre; :( -->
         <content><html:span class="td-strut"/><html:span class="td-span"><children/></html:span></content>