Remove unused angular-feature-flags

Signed-off-by: Alex Coles <alex@alexbcoles.com>

frontend/app/openproject-app.js

@@ -48,7 +48,6 @@ require('angular-ui-router');
 
 require('angular-ui-date');
 require('angular-truncate');
-require('angular-feature-flags');
 
 require('angular-busy/dist/angular-busy');
 require('angular-busy/dist/angular-busy.css');
@@ -176,7 +175,6 @@ var openprojectApp = angular.module('openproject', [
   'ngAria',
   'ngSanitize',
   'truncate',
-  'feature-flags',
   'openproject.layout',
   'cgBusy',
   'openproject.api',
@@ -221,17 +219,15 @@ openprojectApp
     '$http',
     '$rootScope',
     '$window',
-    'featureFlags',
     'TimezoneService',
     'KeyboardShortcutService',
-    function($http, $rootScope, $window, flags, TimezoneService, KeyboardShortcutService) {
+    function($http, $rootScope, $window, TimezoneService, KeyboardShortcutService) {
       $http.defaults.headers.common.Accept = 'application/json';
 
       $rootScope.showNavigation =
         $window.sessionStorage.getItem('openproject:navigation-toggle') !==
         'collapsed';
 
-      flags.set($http.get('/javascripts/feature-flags.json'));
       TimezoneService.setupLocale();
       KeyboardShortcutService.activate();
 

frontend/app/work_packages/directives/index.js

@@ -91,7 +91,6 @@ angular.module('openproject.workPackages.directives')
     'WorkPackagesTableService',
     '$window',
     '$timeout',
-    'featureFlags',
     'PathHelper',
     require('./work-packages-table-directive')
   ]);

frontend/webpack.config.js

@@ -118,7 +118,6 @@ module.exports = {
 
       'angular-ui-date': 'angular-ui-date/src/date',
       'angular-truncate': 'angular-truncate/src/truncate',
-      'angular-feature-flags': 'angular-feature-flags/dist/featureFlags.js',
       'angular-context-menu': 'angular-context-menu/dist/angular-context-menu.js',
       'mousetrap': 'mousetrap/mousetrap.js',
       'hyperagent': 'hyperagent/dist/hyperagent',

public/javascripts/feature-flags.json

@@ -1,8 +0,0 @@
-[
-    {
-        "key":        "detailsView",
-        "active":     true,
-        "name":       "Details View",
-        "description": "Displays details for individual work packages."
-    }
-]