Move pssh utility to correct folder

[KCarretto]

Moves the pssh test utility out of the erroneously created tavern/tests directory and into the correct tests/e2e/utils directory. Removes the tavern/tests directory since it's no longer needed.

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PR created automatically by Jules for task 3624423301420671351 started by @KCarretto

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[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
2941	2941	0	0	0	0	1ms

Previous Results

Build 🏗️	Result 🧪	Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
#1979	✅	2941	2941	0	0	0	0	43.1s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
2941	0	0	4m 9s

Test Changes

0 test added, 0 removed

Slowest Tests

Test 📝	Results 📊	Duration (avg) ⏱️	Duration (p95) ⏱️
eldritch-libfile: std::list_recent_impl::tests::test_list_recent_default_args	3	3m 19s	4m 9s
eldritch-libfile: std::list_recent_impl::tests::test_list_recent_default_args	3	3m 19s	4m 9s
eldritch-libfile: std::list_recent_impl::tests::test_list_recent_default_args	3	3m 19s	4m 9s
TestDockerExecutor_Build_ContextCancellation	1	5.9s	5.9s
eldritch-libsys: std::dll_inject_impl::tests::test_dll_inject_simple	1	5.2s	5.2s
TestInteractiveShell	1	5.0s	5.0s
TestOtherStreamOutput	1	5.0s	5.0s
TestDockerExecutor_Build_SimpleEcho	1	3.8s	3.8s
imix::bin/imix: tests::task_tests::test_task_eprint_behavior	3	3.0s	3.0s
imix::bin/imix: tests::task_tests::test_task_eprint_behavior	3	3.0s	3.0s

_{🎉 No failed tests in this run. | 🍂 No flaky tests in this run.}

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