chore: Remove unused IPC async

[ritchie46]

Remove unused async IPC code. Was not useful to us as it was overly generic, where we use the tokio runtime and need an adaptor to convert to futures::AsyncRead.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.96%. Comparing base (e29e9df) to head (ce2f1fa).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #19223      +/-   ##
==========================================
+ Coverage   79.68%   79.96%   +0.28%     
==========================================
  Files        1532     1526       -6     
  Lines      209211   208489     -722     
  Branches     2416     2416              
==========================================
+ Hits       166710   166719       +9     
+ Misses      41953    41222     -731     
  Partials      548      548              

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[PrettyWood]

@ritchie46 Following @lukapeschke 's comment here we rely on this code and it prevents us from upgrading polars. Would you mind considering a PR to reimplement part of the logic, maybe simplified considering your comment?
We are ok to contribute and write the code but need your guidelines for the expected API 🙏