Remove obsolate menu and trigger type definitions

These types were collected with
  grep -rn "tt_" * | sed 's,^.*tt_,tt_,g;s,[],:;) ].*$,,g' | sort | uniq -c

and

  grep -rn "mt_" * | sed 's,^.*mt_,mt_,g;s,[],:;) ].*$,,g' | sort | uniq -c