expr: stop repeating the about line in --help

[MsfPablo]

Fixes #13983.

expr-after-help opened by restating expr-about verbatim, so expr --help printed "Print the value of EXPRESSION to standard output" once as the clap about line and again a few lines down. Dropped the duplicated sentence from the after-help text and kept the part that is actually about the section below it.

Applied to en-US.ftl and fr-FR.ftl, which both carried the same duplication.

GNU's expr --help reads "Print the value of EXPRESSION to standard output. A blank line below separates increasing precedence groups." as one paragraph, but it has no separate about line — clap prints ours already, so keeping only the second sentence gives the same result rather than diverging from GNU.

Print the value of EXPRESSION to standard output

Usage: expr [EXPRESSION]
       expr [OPTIONS]
...
A blank line below separates increasing precedence groups.

EXPRESSION may be:

cargo test --no-default-features --features expr --test tests test_expr: 132 passed.

[codspeed-hq]

Merging this PR will improve performance by 7.07%

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 4 improved benchmarks
✅ 353 untouched benchmarks
⏩ 50 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	numfmt_stream_to_si_precision	390.9 ms	345.1 ms	+13.26%
⚡	Simulation	numfmt_stream_to_si	431.1 ms	398.2 ms	+8.26%
⚡	Simulation	du_summarize_balanced_tree[(5, 4, 10)]	16.4 ms	15.8 ms	+4.03%
⚡	Simulation	numfmt_to_si_precision[10000]	92.9 ms	90.1 ms	+3.03%

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.

---

_{Comparing MsfPablo:fix/expr-help-duplicate-about (3b5f861) with main (bfd7c63)}

Footnotes

1. 50 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:

Skip an intermittent issue tests/cut/bounded-memory (fails in this run but passes in the 'main' branch)
Skip an intermittent issue tests/tail/tail-n0f (fails in this run but passes in the 'main' branch)
Skipping an intermittent issue tests/tail/symlink (passes in this run but fails in the 'main' branch)
Note: The gnu test tests/dd/no-allocate is now being skipped but was previously passing.
Congrats! The gnu test tests/cp/link-heap is now passing!
Congrats! The gnu test tests/rm/many-dir-entries-vs-OOM is now passing!
Congrats! The gnu test tests/seq/seq-epipe is now passing!

[oech3]

duplicated PR