Mark date-locale-hour flakey & drop a useless cache action

[oech3]

No description provided.

[codspeed]

Merging this PR will improve performance by 15.21%

⚡ 2 improved benchmarks
✅ 286 untouched benchmarks
⏩ 42 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Memory	shuf_input_range[1000000]	8.9 MB	7.7 MB	+15.21%
⚡	Simulation	shuf_input_range[1000000]	92.6 ms	86.1 ms	+7.61%

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_{Comparing oech3:date-flakey (ec26e06) with main (74b8924)}

Footnotes

1. 42 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. ↩

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/date/resolution is no longer failing!
Congrats! The gnu test tests/basenc/bounded-memory is now passing!
Congrats! The gnu test tests/expand/bounded-memory is now passing!
Congrats! The gnu test tests/tail/tail-n0f is now passing!