Revert "Verify chromadb connection by checking openapi title."

[Davidyz]

Reverts #241

This is because the docker image of chromadb 0.6.3 doesn't provide an openapi.json.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.77%. Comparing base (1820ace) to head (e424c2d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #246      +/-   ##
==========================================
- Coverage   99.77%   99.77%   -0.01%     
==========================================
  Files          24       24              
  Lines        1766     1762       -4     
==========================================
- Hits         1762     1758       -4     
  Misses          4        4              

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