chore: Remove the matrix-sdk-crypto re-export in the matrix-sdk crate

[poljar]

• Public API changes documented in changelogs (optional)

[codspeed-hq]

CodSpeed Performance Report

Merging #5769 will not alter performance

_{Comparing poljar/remove-crypto-re-export (126e02a) with main (d117532)}

Summary

✅ 50 untouched

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.46%. Comparing base (d117532) to head (126e02a).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5769      +/-   ##
==========================================
- Coverage   88.46%   88.46%   -0.01%     
==========================================
  Files         360      360              
  Lines      100412   100412              
  Branches   100412   100412              
==========================================
- Hits        88833    88830       -3     
- Misses       7413     7417       +4     
+ Partials     4166     4165       -1     

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[richvdh]

sure