Removed dev-python/grpcio from SDK

grpcio was introduced in commit 7830206e33452

```
We are updating the FAFT RPC server to use gRPC -- see go/faft-grpc.
This change adds the necessary SDK package, dev-python/grpcio.
```

BUG=b/299153458
TEST=sdk build, build image locally with presubmit SDK
RELEASE_NOTE=None

Change-Id: I7971908caa4dd1dd48883a012810478fdd33c8b1
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/57674
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
1 file changed