Revert "GWP-ASan: Enable unit tests on Linux"

This reverts commit 928812d21e879bd7a198d5e57c0797fd72e26f4d.

Reason for revert: This was causing failures on the linux64-trunk continuous builder.

Original change's description:
> GWP-ASan: Enable unit tests on Linux
> 
> Change-Id: I154cc6ce9189ae5412cd70c37333dac694cd672a
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1682435
> Commit-Queue: Vitaly Buka <vitalybuka@chromium.org>
> Auto-Submit: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
> Reviewed-by: Vitaly Buka <vitalybuka@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#674100}

TBR=vtsyrklevich@chromium.org,vitalybuka@chromium.org

Bug: 980748
Change-Id: I6dcd397af19899995c4151731188d33e655b856f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1688320
Reviewed-by: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
Commit-Queue: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#674875}
1 file changed