Unsuppress node_validator_test to check the errors

tests/html/html.status

 # Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 event_test: Skip  # Issue 1996
 interactive_test: Skip # Must be run manually.
 dromaeo_smoke_test: Skip # Issue 14521, 8257
 cross_frame_test: Skip # Test reloads itself. Issue 18558
 
 [ $compiler == none && ($runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) ]
@@ skipping 171 matching lines @@
 worker_test/functional: Fail # IE uses incorrect security context for Blob URIs.
 transferables_test: Fail # Issue 9846
 
 [ $compiler == dart2js && $runtime == chrome ]
 css_test/supportsPointConversions: Fail # Issues 21710
 css_test/functional: Fail # Issues 21710
 
 [ $runtime == ie11 ]
 custom/document_register_type_extensions_test/single-parameter: Fail # Issue 13193.
 canvasrenderingcontext2d_test/arc: Pass, Fail # Pixel unexpected value. Please triage this failure.
-node_validator_test: Pass, RuntimeError # Issues 20657, 20659.
 worker_test/functional: Pass, Fail # Issues 20659.
 transferables_test: Pass, Fail # Issues 20659.
 
 # IE11 Feature support statuses-
 # These results not yet noted in platform support annotations.
 # All changes should be accompanied by platform support annotation changes.
 audiobuffersourcenode_test/supported: Fail
 audiocontext_test/supported: Fail
 crypto_test/supported: Fail
 css_test/supportsPointConversions: Fail
@@ skipping 168 matching lines @@
 [ $compiler == dart2js && $csp && ($runtime == drt || $runtime == safari || $runtime == ff || $runtime == chrome || $runtime == chromeOnAndroid) ]
 # Note: these tests are all injecting scripts by design.  This is not allowed under CSP.
 event_customevent_test: Fail       # Test cannot run under CSP restrictions.
 js_interop_1_test: Skip            # Test cannot run under CSP restrictions (times out).
 js_test: Skip                      # Test cannot run under CSP restrictions (times out).
 postmessage_structured_test: Skip  # Test cannot run under CSP restrictions (times out).
 
 [ $compiler == dart2js && ($runtime == drt || $runtime ==chrome) ]
 wheelevent_test: Fail # Issue 12958
 
-[ $compiler == dart2js && $runtime == ff && $system == windows ]
-node_validator_test: Fail # Issue 22564
-
 [ $compiler == dart2js &&  $runtime == chrome]
 svgelement_test/supported_altGlyph: RuntimeError # Issue 22154
 
 [ ($runtime == dartium) && ($system == macos || $system == windows || $system == linux)]
 # Desktop operating systems do not support touch events on chrome 34 dartium.
 touchevent_test/supported: Fail
 
 [ (($runtime == dartium || $runtime == drt) && $system == macos) || $system == windows ]
 xhr_test/xhr: Skip # Times out.  Issue 21527
 
@@ skipping 11 matching lines @@
 htmlelement_test: StaticWarning
 localstorage_test: StaticWarning
 mutationobserver_test: StaticWarning
 queryall_test: fail
 track_element_constructor_test: StaticWarning
 transferables_test: StaticWarning
 typed_arrays_range_checks_test: StaticWarning
 typing_test: StaticWarning
 webgl_1_test: StaticWarning
 window_nosuchmethod_test: StaticWarning