[draft]:remove ml libraries

[Aisuko]

Description

This PR fixes #

Notes for Reviewers

Signed commits

• Yes, I signed my commits.

As we discussed, we split ML libraries to the seperate repo.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 61.95%. Comparing base (8a0e32c) to head (3e34132).

Files	Patch %	Lines
backend/src/repository/rag/chat.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #45      +/-   ##
==========================================
+ Coverage   61.85%   61.95%   +0.10%     
==========================================
  Files          56       56              
  Lines        1025     1012      -13     
  Branches       77       76       -1     
==========================================
- Hits          634      627       -7     
+ Misses        387      382       -5     
+ Partials        4        3       -1     

Flag	Coverage Δ
backend_app_tests	61.95% <0.00%> (+0.10%)	⬆️

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[Micost]

ok to PR