chore: Remove remote prover client crate

[sergerad]

Summary

Removes the miden-remote-prover-client crate and adds thin wrapper clients where necessary:

1. RemoteBlockProver — crates/block-producer/src/block_prover.rs

2. RemoteBatchProver — crates/block-producer/src/batch_builder/remote_prover.rs

3. RemoteTransactionProver — bin/ntx-builder/src/clients/prover.rs

4. RemoteTransactionProver — bin/benchmark/src/prover.rs

Closes #995.

Changelog

[[entry]]
scope       = "prover"
impact      = "removed"
description = "Removed the miden-remote-prover-client crate"