Use MoreFiles.deleteRecursively with option ALLOW_INSECURE

otherwise all uploadvalidator tests fail on MacOS with
InsecureRecursiveDeleteException.

See Id783a2b9fdd67608d72bdd3b6fbf03ccd4cbe425

Change-Id: I087ee9fd73bf28b1221c999a31769a959d9a3d56
1 file changed