Bug 1144885 followup - Remove spec links from reference, which the CSS test suite validator treats as an error.

layout/reftests/w3c-css/submitted/fonts3/font-size-zero-2-ref.html

@@ -2,8 +2,6 @@
 <title>CSS Test Reference</title>
 <link rel="author" title="L. David Baron" href="http://dbaron.org/">
 <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
-<link rel="help" href="http://www.w3.org/TR/css3-fonts/#font-size-prop">
-<link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins">
 <meta name="flags" content="">
 <style>
 /* spec ambiguous whether font-size-adjust influences line-height: normal */