System Benchmark is a built-in feature that doesn't require installation,
so it shouldn't appear in the Easy Setup Wizard where users select things
to install. Users can access the benchmark through Settings > Benchmark.
- Removed benchmark entry from ADDITIONAL_TOOLS array
- Removed unused isBuiltInCapability helper and related dead code
- Simplified renderCapabilityCard by removing built-in specific styling
- Removed unused IconArrowRight import
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>