Remove calls to distribution and legacy zip support from package util

[bdraco]

Proposed change

In #97628 pkg_resources was replaced with importlib.metadata and everything was tried with importlib.metadata.distribution first, but since is_installed actually gets requirements specifiers, it would always exception with PackageNotFoundError and fall through to be parsed with Requirement.

Remove the code that always exceptions.

This also removes the old zip file support as it likely has not been used for years

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.
• Untested files have been added to .coveragerc.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[bdraco]

distribution cannot parse a requirements string https://docs.python.org/3/library/importlib.metadata.html#distributions only a name https://github.com/python/cpython/blob/db6f297d448ce46e58a5b90239a4779553333198/Lib/importlib/metadata/__init__.py#L861

[jpbede]

Looks good from my side, tested this with a fresh dev instance 👍

[bdraco]

thanks