feat: remove deprecated config names

[frostming]

Pull Request Check List

• A news fragment is added in news/ describing what is new.
• Test cases added for changed code.

Describe what you have changed in this PR.

[codecov-commenter]

Codecov Report

Base: 85.54% // Head: 85.52% // Decreases project coverage by -0.01% ⚠️

Coverage data is based on head (b7b3b7e) compared to base (609d1e9).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1422      +/-   ##
==========================================
- Coverage   85.54%   85.52%   -0.02%     
==========================================
  Files          87       87              
  Lines        7587     7570      -17     
  Branches     1779     1774       -5     
==========================================
- Hits         6490     6474      -16     
+ Misses        716      714       -2     
- Partials      381      382       +1     

Flag	Coverage Δ
unittests	85.33% <100.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/pdm/cli/commands/config.py	96.22% <ø> (+10.07%)	⬆️
src/pdm/project/config.py	89.50% <ø> (-3.32%)	⬇️
src/pdm/cli/options.py	94.89% <100.00%> (+3.63%)	⬆️
src/pdm/models/repositories.py	77.95% <0.00%> (-0.82%)	⬇️
src/pdm/termui.py	90.07% <0.00%> (-0.71%)	⬇️
src/pdm/cli/actions.py	79.95% <0.00%> (-0.24%)	⬇️

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