src: remove unused internalVerifyIntegrity internal binding

[dario-piotrowicz]

This PR is removing the internalVerifyIntegrity internal binding, which I believe is no longer used.

I believe that the binding stopped being used in #52583 (see lib/internal/policy/manifest.js line 30).

[nodejs-github-bot]

Review requested:

• @nodejs/crypto

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.19%. Comparing base (4a86be2) to head (253bdb8).
Report is 23 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #58285      +/-   ##
==========================================
+ Coverage   90.18%   90.19%   +0.01%     
==========================================
  Files         631      631              
  Lines      186687   186659      -28     
  Branches    36663    36661       -2     
==========================================
+ Hits       168355   168364       +9     
+ Misses      11124    11100      -24     
+ Partials     7208     7195      -13     

Files with missing lines	Coverage Δ
src/crypto/crypto_hash.cc	73.01% <ø> (+5.82%)	⬆️
src/crypto/crypto_hash.h	20.00% <ø> (ø)

... and 30 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/66767/

[nodejs-github-bot]

Landed in fd0d852