Removes slow RTCQuicStream wpt test.

Bug: 925600
Change-Id: I211712e998061394a844207ae41126fc72eea92f
Reviewed-on: https://chromium-review.googlesource.com/c/1441991
Reviewed-by: Steve Anton <steveanton@chromium.org>
Commit-Queue: Seth Hampson <shampson@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#627068}(cherry picked from commit 805ab1b61c09aca4737ad88128c17fb35ddea844)
Reviewed-on: https://chromium-review.googlesource.com/c/1447258
Reviewed-by: Seth Hampson <shampson@chromium.org>
Cr-Commit-Position: refs/branch-heads/3683@{#81}
Cr-Branched-From: e51029943e0a38dd794b73caaf6373d5496ae783-refs/heads/master@{#625896}
2 files changed