Remove javascript URL case from <a>/<area>/Location hash setter

It makes no sense to just special case them in this IDL attribute
anymore, if it ever did.

Javascript URLs might come up again for the Location object 
per #1565, but for now they cannot be represented there and
the other case should be aligned with the URL Standard, which
changes per whatwg/url#254.

source

@@ -22078,9 +22078,7 @@ interface <dfn>HTMLHyperlinkElementUtils</dfn> {
    <li><p>Let <var>url</var> be this element's <span
    data-x="concept-hyperlink-url">url</span>.</p></li>
 
-   <li><p>If <var>url</var> is null or <var>url</var>'s <span
-   data-x="concept-url-scheme">scheme</span> is "<code data-x="">javascript</code>", terminate these
-   steps.</p></li>
+   <li><p>If <var>url</var> is null, then return.</p></li>
 
    <li><p>If the given value is the empty string, set <var>url</var>'s <span
    data-x="concept-url-fragment">fragment</span> to null.
@@ -81231,9 +81229,6 @@ State: &lt;OUTPUT NAME=I>1&lt;/OUTPUT> &lt;INPUT VALUE="Increment" TYPE=BUTTON O
    <li><p>Let <var>copyURL</var> be a copy of this <code>Location</code> object's <span
    data-x="concept-location-url">url</span>.</p></li>
 
-   <li><p>If <var>copyURL</var>'s <span data-x="concept-url-scheme">scheme</span> is "<code
-   data-x="">javascript</code>", terminate these steps.</p></li>
-
    <li><p>Let <var>input</var> be the given value with a single leading "<code data-x="">#</code>"
    removed, if any.</p></li>