Bring AM tests back to green again.

actionmailer/test/fixtures/nested/layouts/spam.html.erb

@@ -1 +0,0 @@
-Nested Spammer layout <%= yield %>

actionmailer/test/old_base/mail_layout_test.rb

@@ -51,16 +51,6 @@ class ExplicitLayoutMailer < ActionMailer::Base
   end
 end
 
-class NestedLayoutMailer < ActionMailer::Base
-  layout 'nested/layouts/spam'
-
-  def signup
-    recipients 'test@localhost'
-    subject    "You have a mail"
-    from       "tester@example.com"
-  end
-end
-
 class LayoutMailerTest < Test::Unit::TestCase
   def setup
     set_delivery_method :test
@@ -155,9 +145,4 @@ class LayoutMailerTest < Test::Unit::TestCase
     mail = ExplicitLayoutMailer.logout
     assert_equal "You logged out", mail.body.to_s.strip
   end
-
-  def test_nested_class_layout
-    mail = NestedLayoutMailer.signup
-    assert_equal "Nested Spammer layout We do not spam", mail.body.to_s.strip
-  end
 end

actionmailer/test/old_base/mail_render_test.rb

@@ -68,7 +68,9 @@ class RenderMailer < ActionMailer::Base
     end
 
     def build_body_part(content_type, assigns, options = {})
-      render "#{template}.#{content_type}", :body => assigns
+      ActiveSupport::Deprecation.silence do
+        render "#{template}.#{content_type}", :body => assigns
+      end
     end
 end