Error: dojo is not defined in Contribution pages (logged in user)

I think the intent was to NOT include any dojo features on the contribution pages. However, the current behavior for an authenticated user w/ CiviCRM permissions is causing a javascript error (dojo is not defined) - because the following script is still included in the page:

<script type="text/javascript">
dojo.require('dojo.widget.ComboBox');
</script>

We should suppress the above code (which is related to the quick search combobox) - since the dojo library isn't being included on contribution pages.