removed lines generating Requires metadata

[BKaraargirov]

Description

When you remove the requires and leave only install_requires only Requires-Dist is generated.
More info: #6001

For reviewers

• Check that the PR title is short, concise, and will make sense 1 year
  later.
• Check that new functions are imported in corresponding __init__.py.
• Check that new features, API changes, and deprecations are mentioned in
  doc/release/release_dev.rst.

[grlee77]

As far as I can tell this looks okay. Would be good to get a second confirmation from another dev familiar with these fields.

[hmaarrfk]

It seems that scipy only uses the install_requires.

https://gitlab.freedesktop.org/mesa/drm/-/issues/72

Lets do this.

[grlee77]

Thanks @BKaraargirov!