Yusuke Endoh fc26004660 Remove test_retry_workers ...

The test fails randomly for unknown reason.

https://github.com/ruby/ruby/actions/runs/14121674932/job/39562945096?pr=12993
```
    1) Error:
  TestParallel::TestParallel#test_retry_workers:
  Test::Unit::ProxyError: execution expired (start: 2025-03-28 04:04:10 +0000, end: 2025-03-28 04:05:50 +0000)
      /home/runner/work/ruby/ruby/src/tool/test/testunit/test_parallel.rb:16:in 'TestParallel.timeout'
      /home/runner/work/ruby/ruby/src/tool/test/testunit/test_parallel.rb:225:in 'TestParallel::TestParallel#test_retry_workers'
```

Maybe the workers do not respond "quit" request.

We no longer use the retry mechanism, so just remove the test.

2025-03-28 14:19:33 +09:00

..

testunit

Remove test_retry_workers

2025-03-28 14:19:33 +09:00

init.rb

…

runner.rb

…

test_jisx0208.rb

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test_sync_default_gems.rb

…