Remove Turn from default Gemfile.

We still looking for a best presentation for tests output.

railties/lib/rails/generators/app_base.rb

@@ -190,17 +190,6 @@ module Rails
         end
       end
 
-      def turn_gemfile_entry
-        unless RUBY_VERSION < "1.9.2" || options[:skip_test_unit]
-          <<-GEMFILE.strip_heredoc
-            group :test do
-              # Pretty printed test output
-              gem 'turn', :require => false
-            end
-          GEMFILE
-        end
-      end
-
       def assets_gemfile_entry
         <<-GEMFILE.strip_heredoc
           # Gems used only for assets and not required

railties/lib/rails/generators/rails/app/templates/Gemfile

@@ -21,5 +21,3 @@ source 'http://rubygems.org'
 
 # To use debugger
 # <%= ruby_debugger_gemfile_entry %>
-
-<%= turn_gemfile_entry -%>

railties/test/generators/app_generator_test.rb

@@ -242,21 +242,6 @@ class AppGeneratorTest < Rails::Generators::TestCase
     end
   end
 
-  def test_inclusion_of_turn_gem_in_gemfile
-    run_generator
-    assert_file "Gemfile" do |contents|
-      assert_match(/gem 'turn'/, contents) unless RUBY_VERSION < '1.9.2'
-      assert_no_match(/gem 'turn'/, contents) if RUBY_VERSION < '1.9.2'
-    end
-  end
-
-  def test_turn_gem_is_not_included_in_gemfile_if_skipping_test_unit
-    run_generator [destination_root, "--skip-test-unit"]
-    assert_file "Gemfile" do |contents|
-      assert_no_match(/gem 'turn'/, contents) unless RUBY_VERSION < '1.9.2'
-    end
-  end
-
   def test_inclusion_of_ruby_debug
     run_generator
     assert_file "Gemfile" do |contents|