chore: delete setup.py

[shenxianpeng]

I don't think we need the setup.py file anymore.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.71%. Comparing base (50e617c) to head (007b4f4).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #49   +/-   ##
=======================================
  Coverage   85.71%   85.71%           
=======================================
  Files           3        3           
  Lines          77       77           
=======================================
  Hits           66       66           
  Misses         11       11           

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