Remove the new rust-based website from the workspace

[AdamGS]

Summary

This simplifies the dependency conflicts/issues, and also a step towards moving the website into its own repo.

[AdamGS]

@0ax1 @myrrc is this what you guys had in mind?

[codspeed-hq]

Merging this PR will improve performance by 30.19%

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚡ 3 improved benchmarks
✅ 1504 untouched benchmarks

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	chunked_bool_canonical_into[(1000, 10)]	45.3 µs	30.3 µs	+49.41%
⚡	Simulation	chunked_varbinview_canonical_into[(1000, 10)]	197.1 µs	160.8 µs	+22.53%
⚡	Simulation	chunked_varbinview_into_canonical[(1000, 10)]	211.7 µs	175.6 µs	+20.54%

Tip

Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing adamg/remove-rust-website-workspace (6663e70) with develop (4e6e9ed)}

[connortsui20]

Let's just kill the entire thing, though that requires removing a bunch of other stuff in CI.

The new version I'm vibe coding in the background can live in a different place if we want.

Please let me know before we merge so I can update my ec2 server

[AdamGS]

are we replacing vibe-web-server-rs 1.0 with vibe-web-server-rs 2.0? If there's more work to do that, do you mind taking the work to remove the current version from the repo?