Remove default share options

For two reasons:
1. Easier maintenance, with the widget generating the HTML and overriding this HTML, it was not immediately clear where to make the edits/additions to share options. Both places?
2. Removes a flash of unstyled content

We still need the input element because a label exists outside of this that references the input. Without that input, validation would result in an error.

wdn/templates_4.1/includes/share.html

@@ -1,13 +1,6 @@
 <div class="wdn-share-this-page wdn-dropdown-widget-content" id="wdn-main-share-button">
 	<div class="wdn-share-button">
-	    <input type="checkbox" id="wdn-main-share-button-wdn-share-toggle" value="Show share options" class="wdn-input-driver wdn-dropdown-widget-toggle" aria-controls="wdn-share-options" />
+	    <input type="checkbox" id="wdn-main-share-button-wdn-share-toggle" value="Show share options" class="wdn-input-driver wdn-dropdown-widget-toggle"  />
 	    <label for="wdn-main-share-button-wdn-share-toggle" class="wdn-icon-share"><span class="wdn-text-hidden">Share This Page</span></label>
-	    <ul id="wdn-share-options">
-	        <li><a href="http://go.unl.edu/?url=referer" id="wdn_createGoURL" class="wdn-icon-link" rel="nofollow">Get a Go URL</a></li>
-	        <li class="outpost" id="wdn_emailthis"><a href="mailto:" class="wdn-icon-mail" rel="nofollow">Email this page</a></li>
-	        <li class="outpost" id="wdn_facebook"><a href="https://www.facebook.com/sharer/sharer.php" class="wdn-icon-facebook" rel="nofollow">Share on Facebook</a></li>
-	        <li class="outpost" id="wdn_twitter"><a href="https://twitter.com/share" class="wdn-icon-twitter" rel="nofollow">Share on Twitter</a></li>
-	        <li class="outpost" id="wdn_linkedin"><a href="https://www.linkedin.com/shareArticle?mini=true" class="wdn-icon-linkedin-squared" rel="nofollow">Share on LinkedIn</a></li>
-	    </ul>
 	</div>
 </div>