[AW NS] Update test filter: some ClientOnPageStartedTest tests passing

Remove passing tests from the filter.

Passing tests:
-ClientOnPageStartedTest.testBrowserInitiatedHangingNavigation
-ClientOnPageStartedTest.testRendererInitiatedHangingNavigation

passing due to:
https://chromium-review.googlesource.com/c/chromium/src/+/1345029

The above tests rely on onLoadResource call, which is implemented
via shouldInterceptRequest.

BUG=893572,841556
Cq-Include-Trybots: master.tryserver.chromium.android:android_mojo

TBR=cduvall@chromium.org,jam@chromium.org

Change-Id: I0062fd921ac0ce8f859a335674fd25b82fd07e9b
Reviewed-on: https://chromium-review.googlesource.com/c/1350919Reviewed-by: Tim Volodine <timvolodine@chromium.org>
Commit-Queue: Tim Volodine <timvolodine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611078}

testing/buildbot/filters/mojo.fyi.network_webview_instrumentation_test_apk.filter

@@ -88,11 +88,9 @@
 -org.chromium.android_webview.test.AwSettingsTest.testUniversalAccessFromFilesWithTwoViews
 
 # https://crbug.com/893572
--org.chromium.android_webview.test.ClientOnPageStartedTest.testBrowserInitiatedHangingNavigation
 -org.chromium.android_webview.test.ClientOnPageStartedTest.testBrowserInitiatedRedirectHangingNavigation
 -org.chromium.android_webview.test.ClientOnPageStartedTest.testNotCalledForDownloadContentDisposition
 -org.chromium.android_webview.test.ClientOnPageStartedTest.testNotCalledForDownloadPdf
--org.chromium.android_webview.test.ClientOnPageStartedTest.testRendererInitiatedHangingNavigation
 -org.chromium.android_webview.test.ClientOnPageStartedTest.testRendererInitiatedRedirectHangingNavigation
 
 # https://crbug.com/893573