try removing `ltorch.copy_` #4839

Job	Run time
pytester (ubuntu-22.04, 3.10, latest, core)	12m 0s
pytester (ubuntu-22.04, 3.10, latest, ops)	23m 47s
pytester (ubuntu-22.04, 3.10, nightly, core)	13m 29s
pytester (ubuntu-22.04, 3.10, nightly, ops)	25m 52s
pytester (macOS-14, 3.10, latest, core)	8m 36s
pytester (macOS-14, 3.10, latest, ops)	20m 49s
pytester (macOS-14, 3.10, nightly, core)	10m 1s
pytester (macOS-14, 3.10, nightly, ops)	21m 25s
pytester (windows-2022, 3.10, latest, core)	23m 21s
pytester (windows-2022, 3.10, nightly, core)	24m 44s
pytester (ubuntu-22.04, 3.11, latest)	24m 7s
pytester (ubuntu-22.04, 3.12, latest)	28m 27s
testing-guardian	1s
	3h 56m 39s

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