Remove icon from group tabs.

app/assets/javascripts/discourse/controllers/group.js.es6

@@ -22,7 +22,7 @@ export default Ember.Controller.extend({
     Tab.create({ name: 'mentions' }),
     Tab.create({ name: 'messages', requiresMembership: true }),
     Tab.create({
-      name: 'logs', i18nKey: 'logs.title', icon: 'shield',
+      name: 'logs', i18nKey: 'logs.title',
       requiresMembership: true, requiresGroupAdmin: true
     })
   ],

app/assets/javascripts/discourse/templates/group.hbs

@@ -41,7 +41,6 @@
     {{#each getTabs as |tab|}}
       <li class="{{if tab.active 'active'}}">
         {{#link-to tab.location model title=tab.message}}
-          {{#if tab.icon}}{{fa-icon tab.icon}}{{/if}}
           {{tab.message}}
           {{#if tab.count}}<span class='count'>({{tab.count}})</span>{{/if}}
         {{/link-to}}