[stable31] chore: drop remaining files from webpack / jest

[backportbot]

Backport of #7072

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.84%. Comparing base (054222a) to head (b5e25bb).
Report is 13 commits behind head on stable31.

Additional details and impacted files

@@ Coverage Diff @@## stable31 #7085 +/- ##
============================================
- Coverage 51.87% 51.84% -0.03% 
============================================
Files 287 286 -1 Lines 40923 40811 -112 Branches 794 793 -1 ============================================
- Hits 21229 21160 -69 + Misses 19573 19531 -42 + Partials 121 120 -1 

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