Allowing the client to delete revisions breaks the "audit trail" functionality. This is not allowed in WordPress and shouldn't be allowed through the API. While not recommended, a plugin may opt-in to the previous behavior by setting a custom 'delete_post' capability for the revisions post type. Props dlh, danielbachhuber, TimothyBlynJacobs, azaozz, kadamwhite. Fixes #43709. Built from https://develop.svn.wordpress.org/trunk@45812 git-svn-id: http://core.svn.wordpress.org/trunk@45623 1a063a9b-81f0-0310-95a4-ce76da25c4cd