Revert "FEATURE: Publish read state on group messages. (#7989)"

This reverts commit 1630dae2dbf26b2a0eec639c69ff60643cf6f8d1.

app/controllers/admin/groups_controller.rb

@@ -153,8 +153,7 @@ class Admin::GroupsController < Admin::AdminController
       :default_notification_level,
       :membership_request_template,
       :owner_usernames,
-      :usernames,
-      :publish_read_state
+      :usernames
     ]
     custom_fields = Group.editable_group_custom_fields
     permitted << { custom_fields: custom_fields } unless custom_fields.blank?

app/controllers/groups_controller.rb

@@ -552,8 +552,7 @@ class GroupsController < ApplicationController
             :name,
             :grant_trust_level,
             :automatic_membership_email_domains,
-            :automatic_membership_retroactive,
-            :publish_read_state
+            :automatic_membership_retroactive
           ])
 
           custom_fields = Group.editable_group_custom_fields

app/controllers/post_readers_controller.rb

@@ -1,26 +0,0 @@
-# frozen_string_literal: true
-
-class PostReadersController < ApplicationController
-  requires_login
-
-  def index
-    post = Post.includes(topic: %i[allowed_groups]).find(params[:id])
-    read_state = post.topic.allowed_groups.any? { |g| g.publish_read_state? && g.users.include?(current_user) }
-    raise Discourse::InvalidAccess unless read_state
-
-    readers = User
-      .joins(:topic_users)
-      .where('topic_users.topic_id = ? AND COALESCE(topic_users.last_read_post_number, 1) >= ?', post.topic_id, post.post_number)
-      .where.not(id: [current_user.id, post.user_id])
-
-    readers = readers.map do |r|
-      {
-        id: r.id, avatar_template: r.avatar_template,
-        username: r.username,
-        username_lower: r.username_lower
-      }
-    end
-
-    render_json_dump(post_readers: readers)
-  end
-end