try removing `ltorch.copy_` #4839

Job	Run time
precommit-run / pre-commit	38s
check-package / init-store	5s
check-schema / schema	13s
check-package / pkg-build (ubuntu-latest)	18s
check-package / pkg-check (ubuntu-latest, 3.10)	2m 45s
check-package / pkg-check (ubuntu-latest, 3.11)	2m 51s
check-package / pkg-check (macOS-latest, 3.10)	1m 25s
check-package / pkg-check (macOS-latest, 3.11)	58s
check-package / pkg-check (windows-latest, 3.10)	3m 32s
check-package / pkg-check (windows-latest, 3.11)	3m 51s
check-package / pkg-guardian	1s
	16m 37s

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