unzip: swtich to bsdunzip from libarchive

Unzip from FreeBSD has been ported to libarchive.
Change usr.bin/unzip to use bsdunzip from libarchive.

Differential Revision: https://reviews.freebsd.org/D41239
PR: 272845 (exp-run)

(cherry picked from commit b5a3a89c50671a1ad29e7c43fe15e7b16feac239)