fix: remove user_config.py

[yucongalicechen]

I don't think this is used anywhere, so I deleted it
@sbillinge ready for review

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (88d8d73) to head (59c8ecb).
Report is 25 commits behind head on main.

Additional details and impacted files

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##              main      #303   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files            8         9    +1     
  Lines          500       516   +16     
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+ Hits           500       516   +16     

see 2 files with indirect coverage changes

[sbillinge]

which functions are doing these tasks?

[bobleesj]

Since this is written for changelog.rst, both used by savvy users and future maintainers (could be new members) maybe a bit more context would be better as to what was changed (user config.py) which is stated and also maybe why this was removed?

[yucongalicechen]

which functions are doing these tasks?

_load_config and check_and_build_global_config in tools.

[yucongalicechen]

@sbillinge ready for review. I clarified in the news.

[sbillinge]

actually, I think we should keep this and use it. In principle, we can allow users to override the name and path of the config file this way.

[sbillinge]

I took a look at this, and I think it doesn't add much. I will merge this and we can get rid of it. The other functions can be easily extended if we want to allow users to override the paths or filenames.