Remove broken alert silencing links.

Let's remove the silencing links until we actually have support for that.
A silencing link shouldn't only redirect to Alertmanager, but also open a
silencing dialog for the respective alert name or active alert element.

web/blob/static/js/alerts.js

@@ -9,10 +9,6 @@ function init() {
     }
     $(this).next().toggle();
   });
-
-  $(".silence_alert_link, .silence_children_link").click(function() {
-    alert("Silencing is not yet supported.");
-  });
 }
 
 $(init);

web/blob/templates/alerts.html

@@ -18,7 +18,6 @@
         <td>
           <div>
             <pre><code>{{.HTMLSnippet pathPrefix}}</code></pre>
-            <a href="#" class="silence_children_link">Silence all instances of this alert&hellip;</a>
           </div>
           {{if $activeAlerts}}
           <table class="table table-bordered table-hover table-condensed alert_elements_table">
@@ -39,7 +38,6 @@
               <td><span class="alert alert-{{ .State | alertStateToClass }} state_indicator text-uppercase">{{.State}}</span></td>
               <td>{{.ActiveSince.Time.UTC}}</td>
               <td>{{.Value}}</td>
-              <td><a href="#" class="silence_alert_link">Silence&hellip;</a></td>
             </tr>
             {{end}}
           </table>