Remove the HTMLAreaElement.hreflang and type IDL attributes

The content attributes are left as conforming, the IDL attributes are
removed simply because they are not implemented, and implementing them
would not be particularly worthwhile, while temporarily decreasing
interoperability until all browsers have implemented them.

Fixes #232

source

@@ -36768,8 +36768,6 @@ dictionary <dfn>TrackEventInit</dfn> : <span>EventInit</span> {
  [PutForwards=<span data-x="dom-DOMSettableTokenList-value">value</span>] readonly attribute <span>DOMSettableTokenList</span> <span data-x="dom-area-ping">ping</span>;
  attribute DOMString <span data-x="dom-area-rel">rel</span>;
  readonly attribute <span>DOMTokenList</span> <span data-x="dom-area-relList">relList</span>;
- attribute DOMString <span data-x="dom-area-hreflang">hreflang</span>;
- attribute DOMString <span data-x="dom-area-type">type</span>;
 };
 <span>HTMLAreaElement</span> implements <span>HTMLHyperlinkElementUtils</span>;</pre>
  </dd>
@@ -36939,9 +36937,12 @@ dictionary <dfn>TrackEventInit</dfn> : <span>EventInit</span> {
 
  </ol>
 
- <p>The IDL attributes <dfn><code data-x="dom-area-alt">alt</code></dfn>, <dfn><code data-x="dom-area-coords">coords</code></dfn>, <dfn><code data-x="dom-area-target">target</code></dfn>, <dfn><code data-x="dom-area-download">download</code></dfn>, <dfn><code data-x="dom-area-ping">ping</code></dfn>, <dfn><code data-x="dom-area-rel">rel</code></dfn>,
- <dfn><code data-x="dom-area-hreflang">hreflang</code></dfn>, and <dfn><code data-x="dom-area-type">type</code></dfn>, each must <span>reflect</span> the respective
- content attributes of the same name.</p>
+ <p>The IDL attributes <dfn><code data-x="dom-area-alt">alt</code></dfn>, <dfn><code
+ data-x="dom-area-coords">coords</code></dfn>, <dfn><code
+ data-x="dom-area-target">target</code></dfn>, <dfn><code
+ data-x="dom-area-download">download</code></dfn>, <dfn><code
+ data-x="dom-area-ping">ping</code></dfn>, and <dfn><code data-x="dom-area-rel">rel</code></dfn>,
+ each must <span>reflect</span> the respective content attributes of the same name.</p>
 
  <p>The IDL attribute <dfn><code data-x="dom-area-shape">shape</code></dfn> must
  <span>reflect</span> the <code data-x="attr-area-shape">shape</code> content attribute.</p>