docs(core): remove non-existent param from as_tool docstring

[mdrxy]

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1 Skipped Deployment

Project	Deployment	Preview	Comments	Updated (UTC)
langchain	Ignored	Preview		Sep 30, 2025 7:43pm

[codspeed-hq]

CodSpeed WallTime Performance Report

Merging #33165 will not alter performance

_{Comparing mdrxy/nit-remove-non-existant-arg-core-runnable (2f4e8e9) with master (33a6def)¹}

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

Summary

✅ 13 untouched

Footnotes

1. No successful run was found on master (9c97597) during the generation of this report, so 33a6def was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩