Remove duplicate

actionpack/Rakefile

@@ -36,13 +36,6 @@ Rake::TestTask.new(:test_action_pack) do |t|
   #t.warning = true
 end
 
-task :test_action_pack_isolated do
-  test_files = Dir.glob( "test/{controller,dispatch,template,html-scanner}/**/*_test.rb" ).sort
-  test_lib   = test_lib_dirs.map { |lib| "-I#{lib}" }.join(' ')
-  test_files.map! { |f| "ruby #{test_lib} #{f}" }
-  exec test_files.join(" && ")
-end
-
 task :isolated_test do
   ruby = File.join(*RbConfig::CONFIG.values_at('bindir', 'RUBY_INSTALL_NAME'))
   Dir.glob("test/{controller,dispatch,template}/**/*_test.rb").all? do |file|