15289 cmd: remove pragma ident
Reviewed by: Igor Kozhukhov <igor@dilos.org>
Reviewed by: Dan Cross <cross@oxidecomputer.com>
Approved by: Dan McDonald <danmcd@mnx.io>

6268975 cmd/backup and gcc don't get along
6271135 gcc and cmd/fs.d/udfs don't get along
6273816 gcc and cmd/rmt don't get along

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