finish removing backbone last seen indicator view

background.html

@@ -212,7 +212,6 @@
 
   <script type='text/javascript' src='js/views/react_wrapper_view.js'></script>
   <script type='text/javascript' src='js/views/whisper_view.js'></script>
-  <script type='text/javascript' src='js/views/last_seen_indicator_view.js'></script>
   <script type='text/javascript' src='js/views/toast_view.js'></script>
   <script type='text/javascript' src='js/views/session_toast_view.js'></script>
   <script type='text/javascript' src='js/views/conversation_loading_view.js'></script>

background_test.html

@@ -214,7 +214,6 @@
 
   <script type='text/javascript' src='js/views/react_wrapper_view.js'></script>
   <script type='text/javascript' src='js/views/whisper_view.js'></script>
-  <script type='text/javascript' src='js/views/last_seen_indicator_view.js'></script>
   <script type='text/javascript' src='js/views/toast_view.js'></script>
   <script type='text/javascript' src='js/views/session_toast_view.js'></script>
   <script type='text/javascript' src='js/views/conversation_loading_view.js'></script>

js/views/last_seen_indicator_view.js

@@ -1,36 +0,0 @@
-/* global Whisper, i18n */
-
-// eslint-disable-next-line func-names
-(function() {
-  'use strict';
-
-  window.Whisper = window.Whisper || {};
-
-  Whisper.LastSeenIndicatorView = Whisper.View.extend({
-    className: 'module-last-seen-indicator',
-    templateName: 'last-seen-indicator-view',
-    initialize(options = {}) {
-      this.count = options.count || 0;
-    },
-
-    increment(count) {
-      this.count += count;
-      this.render();
-    },
-
-    getCount() {
-      return this.count;
-    },
-
-    render_attributes() {
-      const unreadMessages =
-        this.count === 1
-          ? i18n('unreadMessage', [this.count])
-          : i18n('unreadMessages', [this.count]);
-
-      return {
-        unreadMessages,
-      };
-    },
-  });
-})();

test/index.html

@@ -249,7 +249,6 @@
 
   <script type="text/javascript" src="../js/views/react_wrapper_view.js"></script>
   <script type="text/javascript" src="../js/views/whisper_view.js"></script>
-  <script type="text/javascript" src="../js/views/last_seen_indicator_view.js"></script>
   <script type="text/javascript" src="../js/views/toast_view.js"></script>
   <script type="text/javascript" src="../js/views/session_toast_view.js"></script>
   <script type="text/javascript" src="../js/views/conversation_loading_view.js"></script>
@@ -288,7 +287,6 @@
   <script type="text/javascript" src="views/list_view_test.js"></script>
   <script type="text/javascript" src="views/inbox_view_test.js"></script>
   <script type="text/javascript" src="views/network_status_view_test.js"></script>
-  <script type="text/javascript" src="views/last_seen_indicator_view_test.js"></script>
 
   <script type="text/javascript" src="models/conversations_test.js"></script>
   <script type="text/javascript" src="models/messages_test.js"></script>