Remove neptune.new

[AleksanderWWW]

Before submitting checklist

• Did you update the CHANGELOG? (not for test updates, internal changes/refactors or CI/CD setup)
• Did you ask the docs owner to review all the user-facing changes?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.94%. Comparing base (555cf80) to head (8b6e819).

Additional details and impacted files

@@             Coverage Diff             @@
##           dev/2.0    #1684      +/-   ##
===========================================
- Coverage    77.41%   76.94%   -0.48%     
===========================================
  Files          304      304              
  Lines        15501    15501              
===========================================
- Hits         12000    11927      -73     
- Misses        3501     3574      +73     

Flag	Coverage Δ
macos	74.54% <ø> (-0.06%)	⬇️
py3.7	74.81% <ø> (+0.01%)	⬆️
ubuntu	74.68% <ø> (-0.11%)	⬇️
unit	74.81% <ø> (+0.01%)	⬆️
windows	73.73% <ø> (-0.01%)	⬇️

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