Remove unused _extract_get_pydantic_json_schema() parameter

[Viicos]

Change Summary

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Checklist

• The pull request title is a good summary of the changes - it will be used in the changelog
• Unit tests for the changes exist
• Tests pass on CI
• Documentation reflects the changes where applicable
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

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[codspeed-hq]

CodSpeed Performance Report

Merging #11155 will improve performances by 5.28%

_{Comparing extract-get-pjs (169d3c5) with main (1f05976)}

Summary

⚡ 1 improvements
✅ 45 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	extract-get-pjs	Change
⚡	test_simple_model_validation[__init__]	42.4 µs	40.2 µs	+5.28%

[github-actions]

Coverage report

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File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
pydantic/_internal
_generate_schema.py
Project Total

This report was generated by python-coverage-comment-action

[sydney-runkle]

Simple enough, thanks!