Revert "Prefer gtar if available" #3784

Job	Run time
Diagnostic export (ubuntu-latest, linked)	1m 28s
Diagnostic export (ubuntu-latest, nightly-latest)	3m 10s
Diagnostic export (windows-latest, linked)	3m 11s
Diagnostic export (windows-latest, nightly-latest)	4m 27s
Diagnostic export (macos-latest, nightly-latest)	1m 9s
Diagnostic export (macos-latest, linked)	1m 29s
	14m 54s

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