src/mongo/transport/grpc:grpc_core_test_remote_exec has been occasionally failing on evergreen, but it doesn't fail in my dev workstation and it doesn't fail on a "spawn host" test machine on evergreen.

https://jira.mongodb.org/browse/SERVER-109640 introduced remote execution of unit tests, and in so doing excluded certain gRPC and ASIO related unit tests. grpc_core_test was not excluded, because it seems to work fine, but maybe there is a scenario in which it fails in the remote execution environment.

Exclude it from remote execution in order to see whether the test failures go away.