Update test expectations for update-bytecheck.https.html

This is failing because we don't support byte-for-byte update check
to all service worker importScript() resources. Update test expectations
to point an appropriate bug entry and remove the entry from S13nSW
expectation as this failure isn't specific to S13nSW.

Bug: 648295
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_mojo
Change-Id: I65dca2a31baa500ae8f1d347af8c77d9e9fd8c29
Reviewed-on: https://chromium-review.googlesource.com/991472Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Commit-Queue: Kenichi Ishibashi <bashi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547643}

third_party/WebKit/LayoutTests/FlagExpectations/enable-features=NetworkService

@@ -18,7 +18,6 @@ Bug(none) external/wpt/service-workers/service-worker/fetch-request-xhr-sync-on-
 crbug.com/771118 external/wpt/service-workers/service-worker/mime-sniffing.https.html [ Failure ]
 Bug(none) external/wpt/service-workers/service-worker/registration-updateviacache.https.html [ Failure Timeout ]
 Bug(none) external/wpt/service-workers/service-worker/shared-worker-controlled.https.html [ Timeout ]
-Bug(none) external/wpt/service-workers/service-worker/update-bytecheck.https.html [ Pass Timeout Failure ]
 Bug(none) external/wpt/service-workers/service-worker/worker-interception.https.html [ Pass Crash Failure ]
 Bug(none) external/wpt/service-workers/service-worker/navigation-preload/broken-chunked-encoding.https.html [ Failure ]
 Bug(none) external/wpt/service-workers/service-worker/ready.https.html [ Pass Crash Failure ]

third_party/WebKit/LayoutTests/TestExpectations

@@ -1987,7 +1987,7 @@ crbug.com/626703 external/wpt/requestidlecallback/cancel-invoked.html [ Timeout
 crbug.com/626703 external/wpt/resource-timing/resource-timing.html [ Timeout Failure ]
 crbug.com/626703 external/wpt/screen-orientation/onchange-event.html [ Timeout ]
 crbug.com/626703 external/wpt/screen-orientation/onchange-event-subframe.html [ Timeout ]
-crbug.com/626703 external/wpt/service-workers/service-worker/update-bytecheck.https.html [ Timeout ]
+crbug.com/648295 external/wpt/service-workers/service-worker/update-bytecheck.https.html [ Timeout ]
 crbug.com/626703 external/wpt/speech-api/SpeechSynthesis-speak-twice.html [ Timeout ]
 crbug.com/626703 external/wpt/svg/linking/reftests/href-filter-element.html [ Failure ]
 crbug.com/626703 external/wpt/wasm/wasm_indexeddb_test.https.html [ Failure ]