Remove 2 particularly contrived specs

They were both identical, failing under jruby, trying to access instance variables etc..

test/backend/metadata_test.rb

@@ -16,24 +16,14 @@ def setup
     assert translation.translation_metadata.is_a?(Hash)
   end
 
-  test "translate preserves metadata stored on original Strings" do
-    store_metadata(:foo, :bar, 'bar')
-    assert_equal 'bar', I18n.t(:foo, :name => 'David').translation_metadata[:bar]
-  end
-
-  test "translate preserves metadata stored on original Strings (when interpolated)" do
-    store_metadata(:foo, :bar, 'bar')
-    assert_equal 'bar', I18n.t(:foo, :name => 'David').translation_metadata[:bar]
-  end
-
   test "translate adds the locale to metadata on Strings" do
     assert_equal :en, I18n.t(:foo, :name => 'David', :locale => :en).translation_metadata[:locale]
   end
 
   test "translate adds the key to metadata on Strings" do
     assert_equal :foo, I18n.t(:foo, :name => 'David').translation_metadata[:key]
   end
-#
+
   test "translate adds the default to metadata on Strings" do
     assert_equal 'bar', I18n.t(:foo, :default => 'bar', :name => '').translation_metadata[:default]
   end
@@ -53,15 +43,5 @@ def setup
   test "metadata works with frozen values" do
     assert_equal(1, I18n.t(:missing, :count => 1, :default => 'foo'.freeze).translation_metadata[:count])
   end
-
-  protected
-
-    def translations
-      I18n.backend.instance_variable_get(:@translations)
-    end
-
-    def store_metadata(key, name, value)
-      translations[:en][key].translation_metadata[name] = value
-    end
 end