Delete old code

We don't have any more 'default' css classes. Default avatar data is
simply provided by a model for rendering in a view.

// FREEBIE

js/views/new_group_update_view.js

@@ -26,8 +26,6 @@
             });
             this.recipients_view.$el.insertBefore(this.$('.container'));
 
-            this.$('.avatar').addClass('default');
-
             this.member_list_view = new Whisper.ContactListView({
                 collection: this.model.contactCollection,
                 className: 'members'

stylesheets/_global.scss

@@ -201,16 +201,6 @@ $avatar-size: 44px;
     padding: 2px 0px 0px 2px;
   }
 
-  .group-default {
-    position: relative;
-    display: inline-block;
-    width: 100%;
-    height: 100%;
-    border-radius: 50%;
-    background: $grey_l url('/images/group_default.png') no-repeat center;
-
-  }
-
   .file-input .thumbnail, .thumbnail .avatar,
   img {
     height: 54px;

stylesheets/manifest.css

@@ -173,13 +173,6 @@ img.emoji {
   .group-info-input .group-avatar {
     display: inline-block;
     padding: 2px 0px 0px 2px; }
-  .group-info-input .group-default {
-    position: relative;
-    display: inline-block;
-    width: 100%;
-    height: 100%;
-    border-radius: 50%;
-    background: #f3f3f3 url("/images/group_default.png") no-repeat center; }
   .group-info-input .file-input .thumbnail, .group-info-input .thumbnail .avatar,
   .group-info-input img {
     height: 54px;