For a short time during the mid-1970s, that description was discarded for JW publishers. Only elders retained the title "Ministers." They even re-labelled the "Kingdom Ministry" the "Kingdom Service", and the "Ministry School" became the "Service School".
However, that did not last too long - a few years at the most.
As Zeb has already mentioned, there was much cherry-picking carried out both before changing the name from "Ministry" to "Service", and then when it was restored to "Ministry."
(I seem to remember Ray Franz's input having something to do with the temporary name change).