Remove ability for users to delete themselves

src/Core/Users/UsersServiceProvider.php

@@ -28,7 +28,7 @@ class UsersServiceProvider extends ServiceProvider
 
         $events->listen(ModelAllow::class, function (ModelAllow $event) {
             if ($event->model instanceof User) {
-                if (in_array($event->action, ['edit', 'delete']) &&
+                if ($event->action === 'edit') &&
                     $event->model->id == $event->actor->id) {
                     return true;
                 }

src/Forum/Actions/ClientAction.php

@@ -39,8 +39,6 @@ class ClientAction extends BaseClientAction
         'core.confirmation_email_sent',
         'core.controls',
         'core.delete',
-        'core.delete_account',
-        'core.delete_account_help',
         'core.delete_forever',
         'core.deleted',
         'core.disclose_online',
@@ -94,7 +92,6 @@ class ClientAction extends BaseClientAction
         'core.post_reply',
         'core.posted_a_reply',
         'core.posts',
-        'core.posts_will_remain',
         'core.powered_by_flarum',
         'core.privacy',
         'core.profile',
@@ -123,7 +120,6 @@ class ClientAction extends BaseClientAction
         'core.upload',
         'core.username',
         'core.username_or_email',
-        'core.username_will_be_released',
         'core.users',
         'core.view',
         'core.viewing_posts',