refactor(rust!): Remove dedicated sink_(parquet/ipc)_cloud functions

[nameexhaustion]

sink_parquet/sink_ipc can now be used directly for cloud paths

[codecov]

Codecov Report

Attention: Patch coverage is 70.58824% with 10 lines in your changes missing coverage. Please review.

Project coverage is 79.63%. Comparing base (cbc0ea0) to head (1f999aa).
Report is 33 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/polars-plan/src/plans/options.rs	0.00%	8 Missing ⚠️
crates/polars-pipe/src/pipeline/convert.rs	95.65%	1 Missing ⚠️
crates/polars-plan/src/client/check.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #20164      +/-   ##
==========================================
+ Coverage   79.58%   79.63%   +0.05%     
==========================================
  Files        1564     1564              
  Lines      217475   217445      -30     
  Branches     2472     2472              
==========================================
+ Hits       173070   173173     +103     
+ Misses      43837    43704     -133     
  Partials      568      568              

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