removing unnecessary requires

Author: tenderlove

activesupport/test/callback_inheritance_test.rb

@@ -1,5 +1,4 @@
 require 'abstract_unit'
-require 'test/unit'
 
 class GrandParent
   include ActiveSupport::Callbacks

activesupport/test/callbacks_test.rb

@@ -1,5 +1,4 @@
 require 'abstract_unit'
-require 'test/unit'
 
 module CallbacksTest
   class Phone

activesupport/test/descendants_tracker_with_autoloading_test.rb

@@ -1,5 +1,4 @@
 require 'abstract_unit'
-require 'test/unit'
 require 'active_support/descendants_tracker'
 require 'active_support/dependencies'
 require 'descendants_tracker_test_cases'
@@ -32,4 +31,4 @@ def test_clear_with_autoloaded_granchildren
       assert_equal [], Child2.descendants
     end
   end
-end
+end

activesupport/test/descendants_tracker_without_autoloading_test.rb

@@ -1,8 +1,7 @@
 require 'abstract_unit'
-require 'test/unit'
 require 'active_support/descendants_tracker'
 require 'descendants_tracker_test_cases'
 
 class DescendantsTrackerWithoutAutoloadingTest < ActiveSupport::TestCase
   include DescendantsTrackerTestCases
-end
+end

activesupport/test/file_update_checker_test.rb

@@ -1,5 +1,4 @@
 require 'abstract_unit'
-require 'test/unit'
 require 'fileutils'
 
 MTIME_FIXTURES_PATH = File.expand_path("../fixtures", __FILE__)
@@ -80,4 +79,4 @@ def test_should_not_invoke_the_block_if_a_watched_dir_changed_its_glob
     assert !checker.execute_if_updated
     assert_equal 0, i
   end
-end
+end