[rubygems/rubygems] Remove helper method not buying us much

https://github.com/rubygems/rubygems/commit/81dc685d20

test/rubygems/test_gem.rb

@@ -931,17 +931,13 @@ class TestGem < Gem::TestCase
     assert_equal true, Gem.loaded_specs.keys.include?('foo')
   end
 
-  def util_path
-    ENV.delete "GEM_HOME"
-    ENV.delete "GEM_PATH"
-  end
-
   def test_self_path
     assert_equal [Gem.dir], Gem.path
   end
 
   def test_self_path_default
-    util_path
+    ENV.delete "GEM_HOME"
+    ENV.delete "GEM_PATH"
 
     Gem.instance_variable_set :@paths, nil
 

test/rubygems/test_gem_path_support.rb

@@ -16,7 +16,7 @@ class TestGemPathSupport < Gem::TestCase
 
     assert_equal ENV["GEM_HOME"], ps.home
 
-    expected = util_path
+    expected = ENV["GEM_PATH"].split(File::PATH_SEPARATOR)
     assert_equal expected, ps.path, "defaults to GEM_PATH"
   end
 
@@ -25,7 +25,7 @@ class TestGemPathSupport < Gem::TestCase
 
     assert_equal File.join(@tempdir, "foo"), ps.home
 
-    expected = util_path + [File.join(@tempdir, 'foo')]
+    expected = ENV["GEM_PATH"].split(File::PATH_SEPARATOR) + [File.join(@tempdir, 'foo')]
     assert_equal expected, ps.path
   end
 
@@ -102,10 +102,6 @@ class TestGemPathSupport < Gem::TestCase
     end
   end
 
-  def util_path
-    ENV["GEM_PATH"].split(File::PATH_SEPARATOR)
-  end
-
   def test_initialize_spec
     ENV["GEM_SPEC_CACHE"] = nil