remove some artifacts of dependent_restrict_raises that I missed

railties/test/generators/app_generator_test.rb

@@ -213,7 +213,6 @@ def test_generator_if_skip_active_record_is_given
     assert_no_file "config/database.yml"
     assert_file "config/application.rb", /#\s+require\s+["']active_record\/railtie["']/
     assert_file "config/application.rb", /#\s+config\.active_record\.whitelist_attributes = true/
-    assert_file "config/application.rb", /#\s+config\.active_record\.dependent_restrict_raises = false/
     assert_file "test/test_helper.rb" do |helper_content|
       assert_no_match(/fixtures :all/, helper_content)
     end

railties/test/isolation/abstract_unit.rb

@@ -253,7 +253,6 @@ def use_frameworks(arr)
                     :activerecord] - arr
       if to_remove.include? :activerecord
         remove_from_config "config.active_record.whitelist_attributes = true"
-        remove_from_config "config.active_record.dependent_restrict_raises = false"
       end
       $:.reject! {|path| path =~ %r'/(#{to_remove.join('|')})/' }
     end