For a non-interactive attempt to pkg_delete a firmware package, print a

For a non-interactive attempt to pkg_delete a firmware package, print a
message advising use of "fw_update -d" rather than saying "ok" and doing
nothing. (pkg_delete intentionally makes it hard to uninstall firmware
to prevent surprises when cleaning a machine).

aja and I were surprised by the "ok" leaving the fw package installed.
suggestion from espie to mention fw_update -d in the message.