Cleanup extract to toolcache feature flag #4650

Job	Run time
Diagnostic export (windows-latest, linked)	2m 53s
Diagnostic export (ubuntu-latest, nightly-latest)	1m 7s
Diagnostic export (macos-latest, linked)	1m 24s
Diagnostic export (windows-latest, nightly-latest)	3m 39s
Diagnostic export (ubuntu-latest, linked)	1m 8s
Diagnostic export (macos-latest, nightly-latest)	1m 16s
	11m 27s

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