remove stale pytest-mypy-plugins references
- remove unused pytest-mypy-plugins from integration-tests.yaml
- update yaml comments to describe typsht multi-checker tests
š¤ Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Remove polling timeout logic from test file
As requested in PR review - pytest-timeout already handles preventing
tests from running indefinitely, so the custom polling timeout logic
is unnecessary.
Co-Authored-By: alex.s@prefect.io <ajstreed1@gmail.com>