## Description
This used to be part of the interface neded by the transactional test
runner to talk to the off chain state of the test cluster, but it is no
longer in use (and isn't necessary for `sui-indexer-alt`), so it's
easiest to get rid of it.

## Test plan

```
sui$ cargo nextest run         \
  -p sui-indexer-alt-e2e-tests \
  -p sui-graphql-e2e-tests
```