Clean up `pandas` references from repo

[datumbox]

🐛 Describe the bug

Python Pandas are no longer an optional dependency of torchvision's dataset. Still there are a few references of them on configuration and CI files. More specifically it should be removed from:

vision/.github/workflows/tests-schedule.yml

Lines 35 to 36 in 5f0edb9

	- name: Install all optional dataset requirements
	run: pip install scipy pandas pycocotools lmdb requests

and

vision/mypy.ini

Lines 105 to 107 in 5906d59

	[mypy-pandas.*]
	ignore_missing_imports = True

Note that we should leave the ./scripts folder unmodified. These scripts are there utilities that are not nor considered part of the library.

Versions

Latest master f676f94

[Carlosbogo]

Hi, I would be glad to help with this

[datumbox]

You got it @Carlosbogo! :)