Remove angular ui-select2 dependency

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

frontend/app/openproject-app.js

@@ -46,8 +46,6 @@ if (I18n.locale === 'de') {
 }
 
 require('angular-ui-router');
-require('angular-ui-select2');
-require('angular-ui-select2-sortable');
 
 require('angular-ui-date');
 require('angular-truncate');
@@ -60,7 +58,7 @@ require('angular-context-menu');
 require('mousetrap');
 
 // global
-angular.module('openproject.uiComponents', ['ui.select2', 'ui.select', 'ngSanitize'])
+angular.module('openproject.uiComponents', ['ui.select', 'ngSanitize'])
 .run(['$rootScope', function($rootScope){
   $rootScope.I18n = I18n;
 }]);
@@ -167,8 +165,6 @@ angular.module('openproject.templates', []);
 
 // main app
 var openprojectApp = angular.module('openproject', [
-  'ui.select2',
-  'ui.select2.sortable',
   'ui.date',
   'ui.router',
   'openproject.config',

frontend/bower.json

@@ -10,8 +10,6 @@
     "angular": "~1.3.14",
     "angular-animate": "~1.3.14",
     "angular-aria": "~1.3.14",
-    "angular-ui-select2": "0.0.5",
-    "angular-ui-select2-sortable": "0.0.1",
     "angular-ui-date": "0.0.3",
     "angular-ui-router": "0.2.13",
     "angular-i18n": "~1.3.0",