[Feature]: Remove Unnecessary Hamming Metric

### Problem / Motivation

The Hamming metric is currently not used in practice. To keep the code clean, it would be better to remove it from the repository.

### Proposed Solution

```python
Remove hamming metric as well as unit tests etc.
```

### Alternatives Considered

_No response_

### Affected Area

{"label" => "C++ Core (storage, indexing)"}