This reverts commit e20560fa.

Reason for revert: Now fails on Linux CFI and also is a bit flaky.

Original change's description:
> Re-land "Add new test runner harness."
> 
> Re-land changes:
> 
>  * Unit test is suppressed in ASAN
>  * --deqp-case is fixed
>  * Debug layer errors should correctly work with failure expectations
> 
> Original message:
> 
> The ANGLE test harness is a harness around GoogleTest that provides
> functionality similar to the Chromium test harness. It supports:
> 
>  * splitting a test set into shards
>  * catching and reporting crashes and timeouts
>  * outputting to the Chromium JSON test results format
>  * multi-process execution
> 
> Unit tests are added in test_utils_unittest.cpp.
> 
> Bug: angleproject:3162
> Change-Id: I841f2b5dfe51f7f44dac68324bdf6afd418b8bfb
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1948240
> Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
> Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
> Commit-Queue: Jamie Madill <jmadill@chromium.org>

TBR=ynovikov@chromium.org,ianelliott@google.com,jonahr@google.com,jmadill@chromium.org

Change-Id: Ibfd65b8b18ead3a232abb6cb75fd6489b0ff5f38
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: angleproject:3162
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1954570Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>