[#24515] Delete the JRH

[lukecwik]

Move :runners:google-cloud-dataflow-java:worker:legacy-worker to :runners:google-cloud-dataflow-java:worker deleting the FnApi runner harness (aka JRH) and the code that was powering it.

Towards #25103

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[codecov]

Codecov Report

Merging #24967 (7a5f2ad) into master (7d6d6de) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #24967   +/-   ##
=======================================
  Coverage   73.12%   73.13%           
=======================================
  Files         735      735           
  Lines       98146    98148    +2     
=======================================
+ Hits        71773    71783   +10     
+ Misses      25010    25002    -8     
  Partials     1363     1363           

Flag	Coverage Δ
python	82.69% <ø> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
sdks/python/apache_beam/utils/interactive_utils.py	95.12% <0.00%> (-2.44%)	⬇️
...ks/python/apache_beam/runners/worker/sdk_worker.py	89.08% <0.00%> (-0.17%)	⬇️
...dks/python/apache_beam/options/pipeline_options.py	93.97% <0.00%> (+0.02%)	⬆️
sdks/python/apache_beam/transforms/util.py	96.39% <0.00%> (+0.15%)	⬆️
sdks/python/apache_beam/transforms/combiners.py	93.43% <0.00%> (+0.38%)	⬆️
sdks/python/apache_beam/runners/direct/executor.py	97.01% <0.00%> (+0.54%)	⬆️
...che_beam/runners/interactive/interactive_runner.py	91.77% <0.00%> (+1.26%)	⬆️
...n/apache_beam/ml/gcp/recommendations_ai_test_it.py	75.51% <0.00%> (+2.04%)	⬆️
.../python/apache_beam/testing/test_stream_service.py	92.85% <0.00%> (+4.76%)	⬆️

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[lukecwik]

Run GoPortable PreCommit

[lukecwik]

Run PythonDocs PreCommit

[lukecwik]

Run SQL_Java17 PreCommit

[lukecwik]

Run Python PreCommit

[github-actions]

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[lukecwik]

whitespace check broken by #24951

[lukecwik]

Run Whitespace PreCommit

[lukecwik]

Run Java_Kafka_IO_Direct PreCommit

[Abacn]

Run PostCommit_Java_Dataflow

[Abacn]

Run Java PostCommit

[Abacn]

Thanks for the work! this LGTM to the best of my knowledge

Besides Java PostCommit (which also runs zetasketch) there are also load tests, nexmark, tpcds build affected. Will follow up on cron jobs once this is merged.

[Abacn]

relevant postcommit tests passed.
Thanks!