fix(uninstall): remove interactive confirmation that breaks curl-pipe installs

--purge-data is already an explicit opt-in; the read prompt causes
'error: aborted' when stdin has no TTY (curl | sudo bash).

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

manage-server/uninstall.sh

@@ -42,8 +42,6 @@ fi
 if [[ $PURGE -eq 1 ]]; then
     info "DESTRUCTIVE: removing manage server volumes..."
     info "  this deletes: scan history, hosts, users, worker binaries"
-    read -r -p "  Are you sure? Type 'yes' to confirm: " CONFIRM
-    [[ "$CONFIRM" == "yes" ]] || die "aborted"
     for vol in triton-manage-db-data triton-manage-bins; do
         podman volume rm -f "$vol" 2>/dev/null \
             || docker volume rm -f "$vol" 2>/dev/null \