Revert "Reland "Upgrade dev-python/grpcio-tools to latest.""

This reverts commit 6c5cccb9f08b4075e581d21ffa7d4ef73ca0d3e6.

Reason for revert: reverting dependent CL crrev.com/c/3861739

Original change's description:
> Reland "Upgrade dev-python/grpcio-tools to latest."
>
> This reverts commit b8a32d972c75f4f4c0189582a9a4fc82167240d6.
>
> Reason for revert: Reland original CL.
>
> Original change's description:
> > Revert "Upgrade dev-python/grpcio-tools to latest."
> >
> > The gRPC uprev removed the grpc++_unsecure.so.1 symlink used by
> > prl_vm_app.
> >
> > This reverts commit 73bec35f449f71a392520dbce58ad2597d14c1dd.
> >
> > BUG=b:232546481
> > BUG=chromium:1311648
> > TEST=pita.Boot
> >
> > Cq-Depend: chromium:3646354
> > Cq-Depend: chromium:3647890
> > Change-Id: Ibbd082ef0acd0e21f5c7d8515282b56f3172eab0
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/3647909
> > Reviewed-by: Brian Norris <briannorris@chromium.org>
> > Tested-by: Brian Norris <briannorris@chromium.org>
>
> Bug: b:232546481
> Bug: chromium:1311648
> Change-Id: Ibe078208d6a21c2d6443eeb4e0e654dbf20fa426
> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/3651492
> Commit-Queue: Allen Webb <allenwebb@google.com>
> Tested-by: Allen Webb <allenwebb@google.com>
> Reviewed-by: Manoj Gupta <manojgupta@chromium.org>

BUG=b:244112938
BUG=b:232546481
BUG=chromium:1311648

Cq-Depend: 3861739
Change-Id: Iac573d341e87c573868624d1a4cd1a2a9ee0c229
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/3858834
Reviewed-by: David Munro <davidmunro@google.com>
Tested-by: James Ye <jamesye@google.com>
Commit-Queue: James Ye <jamesye@google.com>
4 files changed