Remove flaky markers on a bunch of html tests on IE9 to see if they still flake.

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.
 
 async_window_test: Skip #TODO(gram): investigating
 event_test: Skip  # Issue 1996
 interactive_test: Skip # Must be run manually.
 
 [ $compiler == dart2js && $runtime != drt ]
 custom/*: Skip
@@ skipping 20 matching lines @@
 
 [ $compiler == none && $runtime == drt && $system == windows ]
 worker_test/functional: Pass, Crash # Issue 9929.
 
 [ $compiler == dart2js && ($runtime == ie9 || $runtime == ie10 || $runtime == safari || $runtime == ff || $runtime == chrome || $runtime == chromeOnAndroid || $runtime == opera || $runtime == drt || $runtime == dartium)]
 dom_isolates_test: Skip # Need to migrate to new spawnDomFunction.
 
 [ $compiler == dart2js && $runtime == ie10 ]
 async_test: Pass, Fail # timers test fails on ie10.
 indexeddb_2_test: Fail # Issue 12893
-indexeddb_3_test: Fail, Timeout # Issue 9437 + 12893
-indexeddb_4_test: Fail, Timeout # Issue 9437 + 12893
+indexeddb_3_test: Fail # Issue 12893
+indexeddb_4_test: Fail # Issue 12893
 indexeddb_5_test: Fail # Issue 12893
 
 [ $compiler == dart2js && ( $runtime == ie9 || $runtime == ie10 ) ]
 worker_api_test: Fail # IE does not support URL.createObjectURL in web workers.
 
 [ $compiler == dart2js && $runtime == safari ]
 url_test: Fail # Issue 10096
 audiobuffersourcenode_test/supported: Pass, Timeout # Issue 12772
 
 [ $compiler == dart2js && $browser && $checked ]
@@ skipping 32 matching lines @@
 [ $compiler == none && ($runtime == drt || $runtime == dartium) && $mode == debug]
 websql_test: Fail, Pass # Issue 4941: stderr contains a backtrace.
 
 [ $compiler == dart2js && $runtime == drt && $system == macos]
 audiobuffersourcenode_test: Pass, Fail
 
 [$runtime == ie10 ]
 dromaeo_smoke_test: Skip #TODO(efortuna): investigating.
 element_test/click: Fail                # IE does not support firing this event.
 history_test/history: Pass, Fail # issue 8183
-indexeddb_1_test/functional: Fail, Timeout # Issue 9269 + 12893
+indexeddb_1_test/functional: Fail # Issue 9269 + 12893
 isolates_test: Skip
 microtask_test: Fail, Pass # Appears to be flaky
 native_gc_test: Fail, Pass # BUG(7774): Untriaged.
 serialized_script_value_test: Fail
 storage_test: Fail, Pass
 transferables_test: Fail # Issue 9846
 websocket_test/websocket: Fail # TODO(efortuna): Issue 7875.
 canvasrenderingcontext2d_test/drawImage_video_element: Fail # IE does not support drawImage w/ video element
 canvasrenderingcontext2d_test/drawImage_video_element_dataUrl: Fail # IE does not support drawImage w/ video element
 worker_test/functional: Fail # IE uses incorrect security context for Blob URIs.
@@ skipping 272 matching lines @@
 event_customevent_test: Fail       # Test cannot run under CSP restrictions.
 js_interop_1_test: Skip            # Test cannot run under CSP restrictions (times out).
 js_interop_2_test: Fail, OK        # Test cannot run under CSP restrictions.
 js_interop_3_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).
 safe_dom_test: Skip                # Test cannot run under CSP restrictions (times out).
 
 [ $compiler == dart2js && $runtime == drt ]
 wheelevent_test: Fail # http://dartbug.com/12958