[benchmarking] Disable browser:news:businessinsider:2021 on android pixel 2

The businessinsider:2021 story has been faling on android-pixel2-perf on different benchmarks. Disabling it before it is fixed.

Bug: chromium:1259411
Change-Id: I6531190c404f94f0ca035815d9bdb4b609aba99e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3373745


Auto-Submit: Wenbin Zhang <wenbinzhang@google.com>
Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: John Chen <johnchen@chromium.org>
Cr-Commit-Position: refs/heads/main@{#956753}