pybind/ceph_argparse: do not print flag name before CephChoices in he…

[tchaikov]

…lp descs

This reverts commit 332abcd.

Signed-off-by: Kefu Chai kchai@redhat.com

Checklist

• References tracker ticket
• Updates documentation if necessary
• Includes tests for new functionality or reproducer for bug

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[tchaikov]

@adk3798 sorry for reverting your change at #40041

with @sebastian-philipp 's reminder, i realized that

orch ls [<service_type>] [<service_name>] [--export] [plain|json|json-pretty|yaml] [--refresh]

is more correct.

as we use the notation of --export to explain a bool option with true value. and [plain|json|json-pretty|yaml] to explain a positional option.

[tchaikov]

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