chore: drop remaining files from webpack / jest

[susnux]

📝 Summary

files seem to be unused

🏁 Checklist

• Code is properly formatted (npm run lint / npm run stylelint / composer run cs:check)
• Sign-off message is added to all commits
• Tests (unit, integration and/or end-to-end) passing and the changes are covered with tests
• Documentation (README or documentation) has been updated or is not required

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.86%. Comparing base (06099c2) to head (e935e6e).
Report is 5 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #7072 +/- ##
==========================================
+ Coverage 51.85% 51.86% +0.01% 
==========================================
Files 478 477 -1 Lines 40671 40658 -13 Branches 989 988 -1 ==========================================
Hits 21089 21089 + Misses 19476 19464 -12 + Partials 106 105 -1 

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[max-nextcloud]

/backport to stable31