feat(house_keeper): Remove GCS Blob Cleaner (#321)

# What ❔

This feature is replaced with a 30 days TTL policy in GCS. The policy is
already applied, this work cleans unnecessary component on core side.

## Why ❔

Unnecessary work on infra resources. Additionally, the implementation
closely ties the codebase to GCS.

## Checklist

- [x] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [x] Tests for the changes have been added / updated.
- [ ] Documentation comments have been added / updated.
- [x] Code has been formatted via `zk fmt` and `zk lint`.

core/lib/config/src/configs/house_keeper.rs

@@ -4,7 +4,6 @@ use serde::Deserialize;
 #[derive(Debug, Deserialize, Clone, PartialEq)]
 pub struct HouseKeeperConfig {
     pub l1_batch_metrics_reporting_interval_ms: u64,
-    pub blob_cleaning_interval_ms: u64,
     pub gpu_prover_queue_reporting_interval_ms: u64,
     pub prover_job_retrying_interval_ms: u64,
     pub prover_stats_reporting_interval_ms: u64,