[css-fonts-4] Removed eftover, incorrect note w3c#8394

Author: Chris Lilley

css-fonts-4/Overview.bs

@@ -7678,9 +7678,6 @@ interface CSSFontFaceRule : CSSRule {
 };
 </pre>
 
-The (now superseded) <a href="https://www.w3.org/TR/DOM-Level-2-Style/">DOM Level 2 Style specification</a>
-defined a different variant of this rule.
-This definition supersedes that one.
 
 <h3 id="om-fontfeaturevalues">
 The <code id="cssfontfeaturevaluesrule-interface">CSSFontFeatureValuesRule</code> interface</h3>