vendor.sh: remove unnecessary check

this is over-engineering, because we do not allow just
about any path to be provided; it's not provided as an
argument in a command, for example.

this is dictated by a configuration file, which we control.

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/vendor.sh

@@ -79,8 +79,6 @@ fetch()
 {
 	dl_type="$1"; dl="$2"; dl_bkup="$3"; dlsum="$4"
 	[ "$5" = "/dev/null" ] && return 0
-	[ "${5# }" = "$5" ] || $err "fetch: space not allowed in _dest: '$5'"
-	[ "${5#/}" = "$5" ] || $err "fetch: absolute path not allowed: '$5'"
 	_dest="${5##*../}"; _dl="$vendir/cache/$dlsum"
 
 	download "$dl" "$dl_bkup" "$_dl" "$dlsum"