lutris: clean up metadata

[davidak]

Describe the bug

The packages with the Attribute name

• lutris
• lutris-free

have no metadata.

Source: https://nixos.org/nixos/packages.html?channel=nixos-19.09&query=lutris

That leads to errors such as that repology don't recognizes the version:

2019-11-04 12:09:38   lutris-free: ERROR: cannot extract version from "lutris"
2019-11-04 12:09:38   lutris: ERROR: cannot extract version from "lutris"

So people don't find nixpkgs in this list: https://repology.org/project/lutris/versions

Maintainer information:

# a list of nixpkgs attributes affected by the problem
attribute: lutris
# a list of nixos modules affected by the problem
module:

cc @Chiiruno

[stale]

Thank you for your contributions.
This has been automatically marked as stale because it has had no activity for 180 days.
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[davidak]

PR not merged yet

[stale]

I marked this as stale due to inactivity. → More info

[Artturin]

merged #139004