Remove problematic icon matching algorithm

index.html

@@ -649,16 +649,6 @@ <h3>
           an <abbr title="Operating system">OS</abbr>'s task switcher and/or
           system preferences.
         </p>
-        <p>
-          If there are multiple equally appropriate images in
-          [=manifest/icons=], a user agent MUST use the last one declared in
-          order at the time that the user agent collected the list of
-          [=manifest/icons=]. If the user agent tries to use an icon but that
-          icon is determined, upon closer examination, to be inappropriate
-          (e.g. because its content type is unsupported), then the user agent
-          MUST try the next-most-appropriate icon as determined by examining
-          the [=manifest image resource=]'s members.
-        </p>
         <aside class="note">
           <p>
             When [=processing a manifest=], the [=process image resources=]