chore(toggle-button-group): removed a11y option c per PR feedback

docs/_includes/toggle-button-group.html

@@ -96,47 +96,6 @@ <h5 id="toggle-button-group-b" class="clipped">Select Shoe Size</h5>
         </button>
     </li>
 </ul>
-{% endhighlight %}
-
-    <h4>Label Directly on List (c)</h4>
-    <div class="demo">
-        <div class="demo__inner">
-            <ul aria-label="Select Shoe Size" class="toggle-button-group" data-columns="2">
-                <li>
-                    <button type="button" class="toggle-button" aria-pressed="false">
-                        <span class="toggle-button__content">
-                            <span class="toggle-button__title">8</span>
-                        </span>
-                    </button>
-                </li>
-                <li>
-                    <button type="button" class="toggle-button" aria-pressed="false">
-                        <span class="toggle-button__content">
-                            <span class="toggle-button__title">8.5</span>
-                        </span>
-                    </button>
-                </li>
-            </ul>
-        </div>
-    </div>
-
-{% highlight html %}
-<ul aria-label="Select Shoe Size" class="toggle-button-group" data-columns="2">
-    <li>
-        <button type="button" class="toggle-button" aria-pressed="false">
-            <span class="toggle-button__content">
-                <span class="toggle-button__title">8</span>
-            </span>
-        </button>
-    </li>
-    <li>
-        <button type="button" class="toggle-button" aria-pressed="false">
-            <span class="toggle-button__content">
-                <span class="toggle-button__title">8.5</span>
-            </span>
-        </button>
-    </li>
-</ul>
 {% endhighlight %}
 
     <h3>Prescriptive Responsive Layouts Using Preferred Minimum Columns</h3>