fix(pyproject): remove asyncio from pip dependencies (stdlib module)

[luojiyin1987]

Summary

asyncio is a Python standard library module (available since Python 3.4), but it was incorrectly listed as a pip dependency in libs/python/agent/pyproject.toml.

The project's requires-python = ">=3.11,<3.14", so asyncio is guaranteed to be available without pip install. All 25 usages of asyncio in this package are stdlib import asyncio statements.

Changes

• Removed "asyncio" from the dependencies list in libs/python/agent/pyproject.toml

Closes #1913

[vercel]

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[injaneity]

closing this as superseded by #3040. thank you for your contribution!