Building raft-ann-bench can throw a

```
  distutils.errors.DistutilsOptionError: No configuration found for dynamic 'entry-points'.
  Some dynamic fields need to be specified via `tool.setuptools.dynamic`
  others must be specified via the equivalent attribute in `setup.py`.
```

error sometimes depending on distutils reversion.

This is becase we were specifying dynamic entry-points, but not including
the relevant `tool.setuptools.dynamic` section in pyproject.toml. Remove this
to allow building