Bug page auto-focuses (and scrolls to) comment Subject field, preventing scrolling

As of the latest rollout, all bug pages include this code:
<script type="text/javascript"><!--
setFocusByName('field.subject');
// --></script>

This auto-focuses the comment "Subject:" field (a field that probably shouldn't even exist) when the page loads. That's bad in three ways:
* browsers auto-scroll past the summary and description to the field, so you can't read what the bug is actually about without scrolling the page back yourself;
* you can't scroll the page back with the keyboard, because focus is in a text field;
* you can't tell what the problem is, because the field is hidden.

This JavaScript should be removed with a vengeance. :-)