deps: remove unused rust deps

[xtqqczze]

using cargo-shear I found unused dependencies

Fix #10375

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/shuf/shuf-reservoir (fails in this run but passes in the 'main' branch)
Skip an intermittent issue tests/sort/sort-stale-thread-mem (fails in this run but passes in the 'main' branch)

[sylvestre]

wahou
i am curious, how did you detect this ?

[oech3]

i am curious, how did you detect this ?

#10375 (comment)

[sylvestre]

thanks :)

[sylvestre]

ERROR taplo:format_files: the file is not properly formatted path="/home/runner/work/coreutils/coreutils/Cargo.toml"

[github-actions]

GNU testsuite comparison:

Skipping an intermittent issue tests/shuf/shuf-reservoir (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/sort/sort-stale-thread-mem (passes in this run but fails in the 'main' branch)

[codspeed-hq]

CodSpeed Performance Report

Merging this PR will improve performance by 3.85%

_{Comparing xtqqczze:cargo-shear (bcefded) with main (cbbff30)}

Summary

⚡ 1 improved benchmark
✅ 141 untouched benchmarks
⏩ 180 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	sort_ascii_utf8_locale	18.1 ms	17.5 ms	+3.85%

Footnotes

1. 180 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. ↩

[xtqqczze]

We should also consider CI check, opened #10415