Removing outdated xml tests.

tests/html/html.status

Index: tests/html/html.status
diff --git a/tests/html/html.status b/tests/html/html.status
index 65cc8f3ef2ce24f4a7278d08c9fb866a344eb215..0bdb9f7bbea0c05d2f0551f4fe0fae0ede351e9f 100644
--- a/tests/html/html.status
+++ b/tests/html/html.status
@@ -6,8 +6,6 @@ window_open_test: Skip # http://dartbug.com/5151
 
 event_test: Skip  # Issue 1996
 webgl_1_test: Skip  # Issue 1495
-xmldocument_test: Skip  # XML in dart:html is incomplete
-xmlelement_test: Skip  # XML in dart:html is incomplete
 
 # Layout tests are only supported on DRT.
 [ $runtime == ie9 || $runtime == ie10 || $runtime == safari || $runtime == ff || $runtime == chrome || $runtime == opera ]
@@ -191,9 +189,9 @@ element_test/constructors: Fail
 
 [ $runtime == opera ]
 document_test/getCssCanvasContext: Fail # Issue: 7413
+document_test/document: Fail # Issue: 7413
 form_data_test: Fail # Issue: 7413
 keyboard_event_test: Fail # Issue: 7413
-xmldocument_2_test: Fail # Issue: 7413
 element_test/eventListening: Fail # Issue: 7413
 element_test/children: Fail # Issue: 7413
 audiobuffersourcenode_test: Fail