Revert "Support 'xcode parallelization' flag on the test blocks level."

This reverts commit 0f143592b6e3c6db8e13280055065f7ea6b38f1f.

Reason for revert: xcode parallelization flag should only be present for M73+.

Original change's description:
> Support 'xcode parallelization' flag on the test blocks level.
> 
> Bug:920300
> Change-Id: I6a926e12788bff54811b3c034106516e31224a88
> Recipe-Nontrivial-Roll: build_limited_scripts_slave
> Reviewed-on: https://chromium-review.googlesource.com/c/1404137
> Commit-Queue: Maksym Onufriienko <monufriienko@chromium.org>
> Reviewed-by: Sergey Berezin <sergeyberezin@chromium.org>

TBR=justincohen@chromium.org,sergeyberezin@chromium.org,lindsayw@chromium.org,monufriienko@chromium.org

Change-Id: Id6d0cce488714bda96df7b2aba662c97993f5780
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 920300
Reviewed-on: https://chromium-review.googlesource.com/c/1407213
Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: John Budorick <jbudorick@chromium.org>
40 files changed
tree: d8895ce25087607e2553ed9a76f8225c2c2cb346
  1. infra/
  2. masters/
  3. scripts/
  4. site_config/
  5. slave/
  6. tests/
  7. third_party/
  8. .gitattributes
  9. .gitignore
  10. .vpython
  11. codereview.settings
  12. DEPS
  13. environment.cfg.py
  14. LICENSE
  15. OWNERS
  16. PRESUBMIT.py
  17. README.md
  18. WATCHLISTS
README.md

build

Hi build contributor! If you do any change in scripts/master/ or touching any master's html/ directories, you must restart master.chromium.fyi first and ensure that it still works before restarting other masters.

Recipes

If you're here to make a change to ‘recipes’ (the code located in scripts/slave/recipes*), please take a look at the README for more information pertaining to recipes.