Remove remaining LLTrace BlockTimerStat usage and replace with Tracy.

[RyeMutt]

Description

• Remove remaining LLTrace BlockTimerStat usage and replace with Tracy.
• Clean up all remaining parts of LLTrace BlockTimer and the fast timer ui.

Related Issues

• Please link to a relevant GitHub issue for additional context.
  • Bug Fix: Link to an issue that includes reproduction steps and testing guidance.
  • Feature/Enhancement: Link to an issue with a write-up, rationale, and requirements.

Issue Link:

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Checklist

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• All new and existing tests pass.
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• Documentation has been updated if needed.
• Any dependent changes have been merged and published in downstream modules
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Additional Notes