Configurations/unix-Makefile.tmpl: not -v for rm

Not all Unixen know the -v option

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/9012)

(cherry picked from commit 3b8033f3f593ac06aaea5d050960366001ef99f0)