Remove passing browsertest from Network Service failures

DnsProbeBrowserTest.OtherErrorWithCorrectionsFailure passes after the
change made to dns_probe_browsertest.cc in
https://chromium-review.googlesource.com/c/chromium/src/+/853301,
wherein this browsertest can now handle requests to
http(s)://mock.failed.request with the Network Service enabled
(without the Network Service these requests are handled by
URLRequestFailedJob).

Bug: 769401
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_mojo
Change-Id: I36a3180fa222a50eec7ca21ab30dbb086624aea8
Reviewed-on: https://chromium-review.googlesource.com/897666Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533683}

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

@@ -183,7 +183,6 @@
 -DevToolsSanityTest.TestNetworkPushTime
 -DnsProbeBrowserTest.NxdomainProbeResultWithWorkingCorrections
 -DnsProbeBrowserTest.NxdomainProbeResultWithWorkingSlowCorrections
--DnsProbeBrowserTest.OtherErrorWithCorrectionsFailure
 -DnsProbeBrowserTest.OtherErrorWithCorrectionsSuccess
 -DownloadExtensionTest.DownloadExtensionTest_Download_FileSystemURL
 -LoadImageBrowserTest.LoadImage