controllers/crate/version: Remove unused "fetchingDownloads" property

Author: Turbo87

app/controllers/crate/version.js

@@ -9,7 +9,6 @@ const { computed } = Ember;
 export default Ember.Controller.extend({
     isDownloading: false,
 
-    fetchingDownloads: true,
     extraDownloads: Ember.computed('downloads.meta.extra_downloads', function() {
         return this.get('downloads.meta.extra_downloads') || [];
     }),

app/routes/crate/version.js

@@ -17,7 +17,6 @@ export default Ember.Route.extend({
 
         controller.set('crate', crate);
         controller.set('requestedVersion', requestedVersion);
-        controller.set('fetchingDownloads', true);
         controller.set('fetchingFollowing', true);
 
         crate.get('keywords')
@@ -53,7 +52,6 @@ export default Ember.Route.extend({
         const context = controller.get('requestedVersion') ? model : this.modelFor('crate');
 
         context.get('version_downloads').then(downloads => {
-            controller.set('fetchingDownloads', false);
             controller.set('downloads', downloads);
         });
     },