test(functional): recategorize launch scripts

[yaoyu-33]

Summary

• Recategorize selected H100 and GB200 functional launch scripts across L0/L1/L2
• Remove selected GB200 active launch scripts from the functional CI matrix
• Leave H100 counterparts in place for the GB200-only removals

Testing

• uv run pre-commit run --all-files (blocked locally: nvidia-resiliency-ext==0.6.0 has no macOS arm64 wheel)
• uvx pre-commit run --all-files

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[claude]

Light Code Review

Clean CI reorganization. All deleted GB200 scripts have H100 counterparts still in place. Renames are pure tier changes (L0->L1, L1->L2) with no content modifications. The gemma1/gemma2 cross-platform move (GB200 L1 -> H100 L2) correctly consolidates onto H100 while the H100 L1 copies are removed.

No issues found -- LGTM.

Suggested test cases

No perf tests impacted.