Fix restore: remove invalid --skipbw flag from removeacct

The /scripts/removeacct command only accepts --force and --keepdns.
The --skipbw flag is not a valid option and was causing account
termination to fail during full account restore with terminate enabled.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/restore.sh

@@ -131,7 +131,7 @@ restore_full_account() {
     # Terminate existing account if requested
     if [[ "$terminate" == "true" ]] && account_exists "$user"; then
         log_info "Terminating existing account $user before restore..."
-        if ! /scripts/removeacct --skipbw --force "$user"; then
+        if ! /scripts/removeacct --force "$user"; then
             log_error "Failed to terminate account $user"
             rm -rf "$restore_dir"
             return 1