WITH_BHYVE_SNAPSHOT broken after 9cc9abf4

From: Filipe da Silva Santos <contact_at_mail.shiori.com.br>
Date: Mon, 12 Sep 2022 23:05:29 UTC
int vcpu declared in line 1247 isn't being used, since it's now being
redefined inside the for loop in line 1589.

diff --git a/usr.sbin/bhyve/bhyverun.c b/usr.sbin/bhyve/bhyverun.c
index 550cc9d15..27f1d8ea8 100644
--- a/usr.sbin/bhyve/bhyverun.c
+++ b/usr.sbin/bhyve/bhyverun.c
@@ -1244,7 +1244,6 @@ main(int argc, char *argv[])
 #ifdef BHYVE_SNAPSHOT
	char *restore_file;
	struct restore_state rstate;
-       int vcpu;

	restore_file = NULL;
 #endif