remove tentative experimental tests from wpt

[anonrig]

Tentative tests are unfinished tests that we should never implement in the first place. Let's remove them from our test harness.

[codspeed-hq]

Merging this PR will improve performance by 13.19%

Summary

⚡ 1 improved benchmark
✅ 128 untouched benchmarks
⏩ 49 skipped benchmarks¹

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	simpleStringBody[Response]	21.5 µs	19 µs	+13.19%

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_{Comparing yagiz/remove-tentative-wpt (57411ce) with main (cfbf415)}

Footnotes

1. 49 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩