db: drop accepts_chat_messages from users

Another leftover of chats wasting space.
All uses were purged in 0f132b802d.

CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## Unreleased
 
+### REMOVED
+- Dropped `accepts_chat_messages` column from users table in database;
+  it has been unused for almost 3 years
+
 ### Added
 - We mark our MFM posts as FEP-c16b compliant, and retain remote HTML representations for incoming posts marked as FEP-c16b-compliant. (Safety scrubbers are still applied)
 - Prometheus stats now exposes failed ActivityPub deliveries

priv/repo/migrations/20250621000000_drop_accepts_chat_messages.exs

@@ -0,0 +1,17 @@
+defmodule Pleroma.Repo.Migrations.DropAcceptsChatMessages do
+  use Ecto.Migration
+
+  def up do
+    alter table(:users) do
+      remove(:accepts_chat_messages)
+    end
+  end
+
+  def down do
+    alter table(:users) do
+      add(:accepts_chat_messages, :boolean, nullable: true)
+    end
+
+    execute("update users set accepts_chat_messages = true where local = true")
+  end
+end