code gardening: removes redundant selfs

A few have been left for aesthetic reasons, but have made a pass
and removed most of them.

Note that if the method `foo` returns an array, `foo << 1`
is a regular push, nothing to do with assignments, so
no self required.

1 files changed, 2 insertions, 2 deletions

diff --git a/actionmailer/test/base_test.rb b/actionmailer/test/base_test.rb
index 9594cccc4d..8152f28663 100644
--- a/actionmailer/test/base_test.rb
+++ b/actionmailer/test/base_test.rb
@@ -772,8 +772,8 @@ class BaseTest < ActiveSupport::TestCase
 
   test "action methods should be refreshed after defining new method" do
     class FooMailer < ActionMailer::Base
-      # this triggers action_methods
-      self.respond_to?(:foo)
+      # This triggers action_methods.
+      respond_to?(:foo)
 
       def notify
       end