[origin tree boot crash] Revert "selinux: clean up avc node cachewhen disabling selinux"

[Ingo Molnar]

James - i did not see a security pull request email from you in my 
lkml folder so i created this new thread. -tip testing found the 
easy crash below. It reverts cleanly so i went that easy route.

At a really quick 10-seconds glance the crash happens because we 
destroy the slab cache twice, if the sysctl is toggled twice?

	Ingo

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