Remove data-x for instance checks

Author: mfreed7

source

@@ -15080,7 +15080,7 @@ interface <dfn>HTMLStyleElement</dfn> : <span>HTMLElement</span> {
    <li><p>If <var>element</var> has an <span>associated CSS style sheet</span>, <span
    data-x="remove a CSS style sheet">remove the CSS style sheet</span> in question.</p></li>
 
-   <li><p>If <var>element</var>'s <span>root</span> is neither a <span data-x="concept-element-shadow-root">shadow root</span> nor a
+   <li><p>If <var>element</var>'s <span>root</span> is neither a <span>shadow root</span> nor a
    <span>document</span>, then return.</p></li>
    <!-- https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=2740
         Also, per https://github.com/w3c/webcomponents/issues/56 stylesheets should work in
@@ -54425,7 +54425,7 @@ MIT Room 32-G524
   <p>A user agent prefilling a form control must not discriminate between form controls that are
   <span>in a document tree</span> and those that are <span>connected</span>; that is, it is not
   conforming to make the decision on whether or not to autofill based on whether the element's
-  <span>root</span> is a <span data-x="concept-element-shadow-root">shadow root</span> versus a <code>Document</code>.</p>
+  <span>root</span> is a <span>shadow root</span> versus a <code>Document</code>.</p>
 
   <p>A user agent prefilling a form control's <span data-x="concept-fe-value">value</span> must not
   cause that control to <span data-x="suffering from a type mismatch">suffer from a type
@@ -58489,7 +58489,7 @@ o............A....e
 
        <li>
         <p>If <var>scriptElement</var>'s <span>root</span> is <em>not</em> a
-        <span data-x="concept-element-shadow-root">shadow root</span>, then set <var>document</var>'s <code
+        <span>shadow root</span>, then set <var>document</var>'s <code
         data-x="dom-document-currentScript">currentScript</code> attribute to
         <var>scriptElement</var>. Otherwise, set it to null.</p>
 
@@ -72872,7 +72872,7 @@ END:VCARD</pre>
    <li><p>If <var>element</var>'s parent is a <span>shadow host</span>, then return
    <var>element</var>'s <span>assigned slot</span>.</p></li>
 
-   <li><p>If <var>element</var>'s parent is a <span data-x="concept-element-shadow-root">shadow root</span>, then return the parent's
+   <li><p>If <var>element</var>'s parent is a <span>shadow root</span>, then return the parent's
    <span data-x="concept-DocumentFragment-host">host</span>.</p></li>
 
    <li><p>If <var>element</var>'s parent is the <span>document element</span>, then return the