Remove unnecessary shield_privileges service (#35073) (#35080)

## Summary
This removes the redundant `shield_privileges` service, which is no longer used.

x-pack/plugins/security/public/services/shield_privileges.js

@@ -1,52 +0,0 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
-
-import { uiModules } from 'ui/modules';
-
-const module = uiModules.get('security', []);
-module.constant('shieldPrivileges', {
-  cluster: [
-    'all',
-    'monitor',
-    'manage',
-    'manage_security',
-    'manage_index_templates',
-    'manage_pipeline',
-    'manage_ingest_pipelines',
-    'transport_client',
-    'manage_ml',
-    'monitor_ml',
-    'manage_watcher',
-    'monitor_watcher',
-    'read_ccr',
-    'manage_ccr',
-    'manage_ilm',
-    'read_ilm',
-    'monitor_rollup',
-    'manage_rollup',
-    'manage_token',
-    'manage_saml',
-    'create_snapshot',
-  ],
-  indices: [
-    'all',
-    'manage',
-    'monitor',
-    'read',
-    'index',
-    'create',
-    'delete',
-    'write',
-    'delete_index',
-    'create_index',
-    'view_index_metadata',
-    'read_cross_cluster',
-    'manage_follow_index',
-    'manage_ilm',
-    'manage_leader_index',
-  ],
-  applications: []
-});

x-pack/plugins/security/public/views/management/edit_role/index.js

@@ -14,7 +14,6 @@ import 'ui/angular_ui_select';
 import 'plugins/security/services/application_privilege';
 import 'plugins/security/services/shield_user';
 import 'plugins/security/services/shield_role';
-import 'plugins/security/services/shield_privileges';
 import 'plugins/security/services/shield_indices';
 
 import { IndexPatternsProvider } from 'ui/index_patterns/index_patterns';