Unnecessary dependency on pandas in Pypi metadata

### Checklist

- [X] I have searched for [similar issues](https://github.com/isl-org/Open3D/issues).
- [X] For Python issues, I have tested with the [latest development wheel](http://www.open3d.org/docs/latest/getting_started.html#development-version-pip).
- [X] I have checked the [release documentation](http://www.open3d.org/docs/release/) and the [latest documentation](http://www.open3d.org/docs/latest/) (for `master` branch).

### Describe the issue

Open3D includes the following metadata in their releases to Pypi:

```
Requires-Dist: setuptools (>=40.8.0)
Requires-Dist: wheel (>=0.36.0)
Requires-Dist: numpy (>=1.18.0)
Requires-Dist: ipywidgets (>=7.6.0)
Requires-Dist: pygments (>=2.7.4)
Requires-Dist: jupyter-packaging (~=0.10)
Requires-Dist: jupyterlab (==3.*,>=3.0.0)
Requires-Dist: addict
Requires-Dist: pillow (>=8.2.0)
Requires-Dist: matplotlib (>=3)
Requires-Dist: numpy (>1.15)
Requires-Dist: pandas (>=1.0)
Requires-Dist: pyyaml (>=5.4.1)
Requires-Dist: scikit-learn (>=0.21)
Requires-Dist: tqdm
Requires-Dist: pyquaternion
```

However, the Open3D code does not actually depend on `pandas`: a `ctrl-f` through the code-base verifies this. Having this unnecessary dependency tricks build tools like Poetry into installing unnecessary packages, and in Poetry's case leads to exponentially longer build times.

### Steps to reproduce the bug

Go to https://pypi.org/pypi/open3d/json to see the metadata. `ctrl-f` to see the `pandas` dependency.

### Error message

N/A

### Expected behavior

This dependency should not be required, and should be removed from the metadata on Pypi.

### Open3D, Python and System information

N/A: this is verifiable from any browser.

### Additional information

_No response_