This reverts commits 8ef3c539a2
and 4b09de3c90.
It turns out controlling the scheduling is a good idea;
I keep running into exec failures and process limits.
Cq-Include-Trybots: luci.skia.skia.primary:FM-Debian10-Clang-GCE-CPU-AVX2-x86_64-Debug-All,FM-Win2019-Clang-GCE-CPU-AVX2-x86_64-Debug-All
Change-Id: Ia72f446965e5093fbf996e78d9513c15dedae3d9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/364006
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
779a7b83b5