Remove mention about receive.action_mailer from the AS instrumentat…

…ion guide

Since e3f832a `ActionMailer::Base.receive` is
deprecated.

actionmailer/test/log_subscriber_test.rb

@@ -3,11 +3,10 @@
 require "abstract_unit"
 require "mailers/base_mailer"
 require "active_support/log_subscriber/test_helper"
-require "active_support/testing/stream"
 require "action_mailer/log_subscriber"
 
 class AMLogSubscriberTest < ActionMailer::TestCase
-  include ActiveSupport::LogSubscriber::TestHelper, ActiveSupport::Testing::Stream
+  include ActiveSupport::LogSubscriber::TestHelper
 
   def setup
     super
@@ -54,7 +53,9 @@ def test_deliver_message_when_perform_deliveries_is_false
 
   def test_receive_is_notified
     fixture = File.read(File.expand_path("fixtures/raw_email", __dir__))
-    silence_stream(STDERR) { TestMailer.receive(fixture) }
+    assert_deprecated do
+      TestMailer.receive(fixture)
+    end
     wait
     assert_equal(1, @logger.logged(:info).size)
     assert_match(/Received mail/, @logger.logged(:info).first)

guides/source/active_support_instrumentation.md

@@ -291,32 +291,6 @@ INFO. The adapters will add their own data as well.
 Action Mailer
 -------------
 
-### receive.action_mailer
-
-| Key           | Value                                        |
-| ------------- | -------------------------------------------- |
-| `:mailer`     | Name of the mailer class                     |
-| `:message_id` | ID of the message, generated by the Mail gem |
-| `:subject`    | Subject of the mail                          |
-| `:to`         | To address(es) of the mail                   |
-| `:from`       | From address of the mail                     |
-| `:bcc`        | BCC addresses of the mail                    |
-| `:cc`         | CC addresses of the mail                     |
-| `:date`       | Date of the mail                             |
-| `:mail`       | The encoded form of the mail                 |
-
-```ruby
-{
-  mailer: "Notification",
-  message_id: "[email protected]",
-  subject: "Rails Guides",
-  to: ["[email protected]", "[email protected]"],
-  from: ["[email protected]"],
-  date: Sat, 10 Mar 2012 14:18:09 +0100,
-  mail: "..." # omitted for brevity
-}
-```
-
 ### deliver.action_mailer
 
 | Key                   | Value                                                |