chore: remove wrong core-database-postgres package

[air1one]

Summary

core-database-postgres was incorrectly re-added with a few migrations.

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

Merging #3913 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #3913   +/-   ##
========================================
  Coverage    13.69%   13.69%           
========================================
  Files          628      628           
  Lines        14531    14531           
  Branches      1728     1728           
========================================
  Hits          1990     1990           
  Misses       12426    12426           
  Partials       115      115           

Flag	Coverage Δ
#functional	6.77% <ø> (ø)
#integration	9.83% <ø> (ø)

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