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>

6471812 update 3 zones upgrade is failing with SEGV in /bin/sh from memcpy

6268998 cmd/sh and gcc don't get along
6277636 *sh* can crash if it creates too many temporary files

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