Remove to_jq_upload

[tvdeyen]

What is this pull request for?

We do not use the response files in the new Uploader just the message. Since this is a private method we can simply remove it.

Checklist

• I have followed Pull Request guidelines
• I have added a detailed description into each commit message

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.96%. Comparing base (e98664c) to head (98254d1).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2931      +/-   ##
==========================================
- Coverage   95.97%   95.96%   -0.01%     
==========================================
  Files         232      232              
  Lines        6280     6272       -8     
==========================================
- Hits         6027     6019       -8     
  Misses        253      253              

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