Remove pyenv related code (closes #1078)

[mattzque]

Description

Removes pyenv related functionality from gef.py.

See discussion at #1078

Checklist

• My code follows the code style of this project.
• My change includes a change to the documentation, if required.
• If my change adds new code, adequate tests have been added.
• I have read and agree to the CONTRIBUTING document.

[github-actions]

🤖 Coverage update for 2414e58 🟢

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[hugsy]

That's great.

Can I ask you to add a note in the docs like in this file saying pyenv support is dropped after 2024.05 ?

So we don't have future PRs for adding pyenv stuff.

[mattzque]

That's great.

Can I ask you to add a note in the docs like in this file saying pyenv support is dropped after 2024.05 ?

So we don't have future PRs for adding pyenv stuff.

Of course, I've added a note.

[github-actions]

🤖 Coverage update for 2064247 🟢

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[hugsy]

Minor formatting issue to fix before merging

docs/deprecated.md:22:101 MD013/line-length Line length [Expected: 100; Actual: 215]

Note that you can use pre-commit locally to make sure you're compliant before pushing.

[github-actions]

🤖 Coverage update for fe7f7a4 🟢

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