Fix PyTorch EP tests sharing a single timeout

[fheinecke]

Description

This PR added several additional PyTorch EP tests which push the test script over the 210s limit.

I've removed this limit entirely because already has a 10s timeout. Having both is redundant, and causes the tests to collectively fail when the total runtime is > 210s.

This is blocking the 2.19 QA build.

Type of change

• Documentation change (change only to the documentation, either a fix or a new content)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Infra/Build change
• Code refactoring

Changes

Please list the changes introduced in this PR:

• Fix duplicate test timeout causing premature termination and failure of PyTorch EP test suite

Checklist:

• I have read and followed the contributing guidelines
• The functionality is complete
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[fheinecke]

/te-ci L1 pytorch

[vthumbe1503]

LGTM

[vthumbe1503]

I guess, we should have multiple ep tests share a single torchrun to decrease the overall timings for test. cc: @phu0ngng

[greptile-apps]

Greptile Summary

This PR removes the shared Python subprocess timeout so each PyTorch expert-parallel launcher pass can use its own timeout.

• Updates the test documentation to describe per-pass timeout handling.
• Leaves the complete launcher pipeline without a fallback bound if timed-out rank processes survive.

Confidence Score: 4/5

The PR should not merge until the launcher retains an overall fallback timeout that can terminate a pipeline left open by surviving rank processes.

The per-pass timeout covers torchrun rather than the complete tee pipeline, while cleanup is unreachable until that pipeline exits and the Python caller no longer provides a fallback deadline.

Files Needing Attention: tests/pytorch/distributed/test_ep.py, tests/pytorch/distributed/run_test_ep.sh

Important Files Changed

Filename	Overview
tests/pytorch/distributed/test_ep.py	Removes the shared suite timeout as intended, but also removes the only bound covering the launcher pipeline and post-timeout cleanup.

_{Reviews (1): Last reviewed commit: "Fix PyTorch EP tests sharing a single ti..." | Re-trigger Greptile}