module: remove unnecessary readPackage function

[dario-piotrowicz]

No description provided.

[nodejs-github-bot]

Review requested:

• @nodejs/loaders

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.22%. Comparing base (ffc1cf6) to head (1a7f26e).
Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #57596   +/-   ##
=======================================
  Coverage   90.22%   90.22%           
=======================================
  Files         630      630           
  Lines      185149   185117   -32     
  Branches    36236    36242    +6     
=======================================
- Hits       167058   167030   -28     
- Misses      11035    11038    +3     
+ Partials     7056     7049    -7     

Files with missing lines	Coverage Δ
lib/internal/modules/cjs/loader.js	98.26% <100.00%> (ø)
lib/internal/modules/package_json_reader.js	99.36% <ø> (-0.03%)	⬇️

... and 36 files with indirect coverage changes

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