chore: drop metrics from schema

[viraatc]

What does this PR do?

based on offline discussion, we want to drop metrics from schema (it was unused anyways).

Type of change

• Bug fix
• New feature
• Documentation update
• Refactor/cleanup

Related issues

Testing

• Tests added/updated
• All tests pass locally
• Manual testing completed

Checklist

• Code follows project style
• Pre-commit hooks pass
• Documentation updated (if needed)

[github-actions]

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[Copilot]

Pull request overview

Removes the unused metrics configuration section from the benchmark configuration schema and updates templates/examples/tests accordingly so configs no longer include or validate that field.

Changes:

• Removed the Metrics Pydantic model and metrics field from BenchmarkConfig.
• Updated config templates and example YAMLs to drop the metrics: section.
• Updated unit tests to stop including/validating metrics in YAML/schema tests.

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/unit/config/test_yaml_loader.py	Removes metrics from a valid YAML config used in loader tests.
tests/unit/config/test_schema.py	Removes Metrics import and the Metrics unit tests.
src/inference_endpoint/config/templates/submission_template.yaml	Drops metrics section from submission template.
src/inference_endpoint/config/templates/online_template_full.yaml	Drops metrics section from online full template.
src/inference_endpoint/config/templates/offline_template_full.yaml	Drops metrics section from offline full template.
src/inference_endpoint/config/templates/eval_template.yaml	Drops metrics section from eval template.
src/inference_endpoint/config/templates/concurrency_template_full.yaml	Drops metrics section from concurrency full template.
src/inference_endpoint/config/schema.py	Removes Metrics model and BenchmarkConfig.metrics field.
examples/08_Qwen3-VL-235B-A22B_Example/online_qwen3_vl_235b_a22b_shopify.yaml	Drops metrics section from example config.
examples/08_Qwen3-VL-235B-A22B_Example/offline_qwen3_vl_235b_a22b_shopify.yaml	Drops metrics section from example config.
examples/06_Llama2-70B_Example/online_llama2_70b_orca.yaml	Drops metrics section from example config.
examples/05_Llama3.1-8B_Example/online_llama3_8b_cnn.yaml	Drops metrics section from example config.
examples/05_Llama3.1-8B_Example/offline_llama3_8b_cnn.yaml	Drops metrics section from example config.
examples/04_GPTOSS120B_Example/vllm_gptoss_120b_example.yaml	Drops metrics section from example config.
examples/04_GPTOSS120B_Example/sglang_gptoss_120b_example.yaml	Drops metrics section from example config.
examples/04_GPTOSS120B_Example/gptoss_120b_example.yaml	Drops metrics section from example config.
examples/02_ServerBenchmarking/online_llama2_70b_cnn.yaml	Drops metrics section from example config.
examples/02_ServerBenchmarking/offline_llama3_8b_cnn.yaml	Drops metrics section from example config.

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[gemini-code-assist]

Code Review

This pull request removes the metrics collection configuration and associated logic from the codebase, including the Metrics model, its helper methods, and all references in YAML configuration templates and unit tests. I have no feedback to provide as the changes are straightforward and clean.