Revert "Merge branch 'master' of github.com:rails/docrails"

This reverts commit 70d6e16fbad75b89dd1798ed697e7732b8606fa3, reversing
changes made to ea4db3bc078fb3093ecdddffdf4f2f4ff3e1e8f9.

Seems to be a code merge done by mistake.

2 files changed, 1 insertions, 6 deletions

diff --git a/activerecord/test/cases/associations/has_many_through_associations_test.rb b/activerecord/test/cases/associations/has_many_through_associations_test.rb
index 85296a5a83..119e94b831 100644
--- a/activerecord/test/cases/associations/has_many_through_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_through_associations_test.rb
@@ -647,7 +647,7 @@ class HasManyThroughAssociationsTest < ActiveRecord::TestCase
     sarah = Person.create!(:first_name => 'Sarah', :primary_contact_id => people(:susan).id, :gender => 'F', :number1_fan_id => 1)
     john = Person.create!(:first_name => 'John', :primary_contact_id => sarah.id, :gender => 'M', :number1_fan_id => 1)
     assert_equal sarah.agents, [john]
-    assert_equal people(:susan).agents.flat_map(&:agents), people(:susan).agents_of_agents
+    assert_equal people(:susan).agents.map(&:agents).flatten, people(:susan).agents_of_agents
   end
 
   def test_associate_existing_with_nonstandard_primary_key_on_belongs_to
diff --git a/activerecord/test/cases/transactions_test.rb b/activerecord/test/cases/transactions_test.rb
index f84088def3..9c5f2e4724 100644
--- a/activerecord/test/cases/transactions_test.rb
+++ b/activerecord/test/cases/transactions_test.rb
@@ -453,11 +453,6 @@ class TransactionTest < ActiveRecord::TestCase
         raise ActiveRecord::Rollback
       end
     end
-
-   ensure
-    Topic.reset_column_information # reset the column information to get correct reading
-    Topic.connection.remove_column('topics', 'stuff') if Topic.column_names.include?('stuff')
-    Topic.reset_column_information # reset the column information again for other tests
   end
 
   def test_transactions_state_from_rollback